diff --git a/engines/access/access.h b/engines/access/access.h
index 56646f01c96..ad6b10edede 100644
--- a/engines/access/access.h
+++ b/engines/access/access.h
@@ -124,7 +124,7 @@ protected:
 
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 protected:
 	/**
 	 * Play the game
diff --git a/engines/access/detection.cpp b/engines/access/detection.cpp
index b452d25f8bb..34fbc6cdf65 100644
--- a/engines/access/detection.cpp
+++ b/engines/access/detection.cpp
@@ -100,7 +100,7 @@ public:
 		return "Access Engine (C) 1989-1994 Access Software";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/adl/adl.h b/engines/adl/adl.h
index 7ab21d9bec7..021084bf7e0 100644
--- a/engines/adl/adl.h
+++ b/engines/adl/adl.h
@@ -446,7 +446,7 @@ private:
 	Common::String getScriptLine() const;
 	// Engine
 	Common::Error run();
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	bool canLoadGameStateCurrently();
 
 	// Text input
diff --git a/engines/agi/agi.h b/engines/agi/agi.h
index 56f245c6e50..17f87482507 100644
--- a/engines/agi/agi.h
+++ b/engines/agi/agi.h
@@ -720,7 +720,7 @@ protected:
 			return err;
 		return go();
 	}
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	virtual void initialize() = 0;
 
diff --git a/engines/agos/agos.h b/engines/agos/agos.h
index 2874c3378a7..9f178b509c8 100644
--- a/engines/agos/agos.h
+++ b/engines/agos/agos.h
@@ -224,7 +224,7 @@ protected:
 		return go();
 	}
 	virtual GUI::Debugger *getDebugger();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void syncSoundSettings();
 	virtual void pauseEngineIntern(bool pause);
 
diff --git a/engines/avalanche/avalanche.h b/engines/avalanche/avalanche.h
index d50373b07a1..3bbc3393080 100644
--- a/engines/avalanche/avalanche.h
+++ b/engines/avalanche/avalanche.h
@@ -106,7 +106,7 @@ public:
 	uint32 getFeatures() const;
 	const char *getGameId() const;
 	Common::Platform getPlatform() const;
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	const char *getCopyrightString() const;
 
 	void synchronize(Common::Serializer &sz);
diff --git a/engines/avalanche/detection.cpp b/engines/avalanche/detection.cpp
index 4eefe578385..625bc428323 100644
--- a/engines/avalanche/detection.cpp
+++ b/engines/avalanche/detection.cpp
@@ -91,7 +91,7 @@ public:
 	}
 
 	bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *gd) const;
-	bool hasFeature(MetaEngineFeature f) const;
+	bool hasFeature(MetaEngineFeature f) const override;
 
 	int getMaximumSaveSlot() const { return 99; }
 	SaveStateList listSaves(const char *target) const;
diff --git a/engines/bbvs/bbvs.h b/engines/bbvs/bbvs.h
index cfa7abf6e8b..fdda2c8b833 100644
--- a/engines/bbvs/bbvs.h
+++ b/engines/bbvs/bbvs.h
@@ -219,7 +219,7 @@ static const int8 kWalkTurnTbl[] = {
 class BbvsEngine : public Engine {
 protected:
 	Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 public:
 	BbvsEngine(OSystem *syst, const ADGameDescription *gd);
 	~BbvsEngine();
diff --git a/engines/bbvs/detection.cpp b/engines/bbvs/detection.cpp
index 19d1b62d00b..e53aa07d1e6 100644
--- a/engines/bbvs/detection.cpp
+++ b/engines/bbvs/detection.cpp
@@ -85,7 +85,7 @@ public:
 		return "(C) 1995 Viacom New Media";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual int getMaximumSaveSlot() const;
 	virtual SaveStateList listSaves(const char *target) const;
diff --git a/engines/cge/cge.h b/engines/cge/cge.h
index 9a8ea0dde99..c5e007d0bd6 100644
--- a/engines/cge/cge.h
+++ b/engines/cge/cge.h
@@ -137,7 +137,7 @@ private:
 public:
 	CGEEngine(OSystem *syst, const ADGameDescription *gameDescription);
 	~CGEEngine();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual bool canLoadGameStateCurrently();
 	virtual bool canSaveGameStateCurrently();
 	virtual Common::Error loadGameState(int slot);
diff --git a/engines/cge2/cge2.h b/engines/cge2/cge2.h
index 1fa23ad6f7c..72de1cb8e22 100644
--- a/engines/cge2/cge2.h
+++ b/engines/cge2/cge2.h
@@ -156,7 +156,7 @@ private:
 	void resetGame();
 public:
 	CGE2Engine(OSystem *syst, const ADGameDescription *gameDescription);
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual bool canSaveGameStateCurrently();
 	virtual bool canLoadGameStateCurrently();
 	virtual Common::Error saveGameState(int slot, const Common::String &desc);
diff --git a/engines/chewy/chewy.h b/engines/chewy/chewy.h
index 6ebeff833e3..997d123c5a1 100644
--- a/engines/chewy/chewy.h
+++ b/engines/chewy/chewy.h
@@ -69,7 +69,7 @@ public:
 protected:
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	void initialize();
 	void shutdown();
diff --git a/engines/chewy/detection.cpp b/engines/chewy/detection.cpp
index 2206202b12d..618b9e591f4 100644
--- a/engines/chewy/detection.cpp
+++ b/engines/chewy/detection.cpp
@@ -129,7 +129,7 @@ public:
 		return "Chewy: Esc from F5 (C) 1995 New Generation Software";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/cine/cine.h b/engines/cine/cine.h
index 615e36d5989..044be2972b3 100644
--- a/engines/cine/cine.h
+++ b/engines/cine/cine.h
@@ -104,7 +104,7 @@ class CineEngine : public Engine {
 protected:
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	void shutdown();
 
diff --git a/engines/cine/detection.cpp b/engines/cine/detection.cpp
index 55e76c68639..00c7ee4285c 100644
--- a/engines/cine/detection.cpp
+++ b/engines/cine/detection.cpp
@@ -92,7 +92,7 @@ public:
 	}
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
 	virtual void removeSaveState(const char *target, int slot) const;
diff --git a/engines/composer/composer.h b/engines/composer/composer.h
index 45a46670373..a0b48dbb23b 100644
--- a/engines/composer/composer.h
+++ b/engines/composer/composer.h
@@ -175,7 +175,7 @@ public:
 	ComposerEngine(OSystem *syst, const ComposerGameDescription *gameDesc);
 	virtual ~ComposerEngine();
 
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	int getGameType() const;
 	const char *getGameId() const;
diff --git a/engines/composer/detection.cpp b/engines/composer/detection.cpp
index 69100d673e1..7e62facb899 100644
--- a/engines/composer/detection.cpp
+++ b/engines/composer/detection.cpp
@@ -734,7 +734,7 @@ public:
 	}
 
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual int getMaximumSaveSlot() const;
 	virtual SaveStateList listSaves(const char* target) const;
 };
diff --git a/engines/cruise/cruise.h b/engines/cruise/cruise.h
index 8624ba693ec..aac75c481db 100644
--- a/engines/cruise/cruise.h
+++ b/engines/cruise/cruise.h
@@ -80,7 +80,7 @@ protected:
 public:
 	CruiseEngine(OSystem * syst, const CRUISEGameDescription *gameDesc);
 	virtual ~ CruiseEngine();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	int getGameType() const;
 	const char *getGameId() const;
diff --git a/engines/cruise/detection.cpp b/engines/cruise/detection.cpp
index e6573184409..78c98965d0a 100644
--- a/engines/cruise/detection.cpp
+++ b/engines/cruise/detection.cpp
@@ -210,7 +210,7 @@ public:
 		return "Cinematique evo 2 (C) Delphine Software";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual int getMaximumSaveSlot() const { return 99; }
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual void removeSaveState(const char *target, int slot) const;
diff --git a/engines/cryo/detection.cpp b/engines/cryo/detection.cpp
index c2be650e7f2..4d4e2bdc80f 100644
--- a/engines/cryo/detection.cpp
+++ b/engines/cryo/detection.cpp
@@ -147,7 +147,7 @@ public:
 		return "Cryo Engine (C) Cryo Interactive";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 };
 
diff --git a/engines/director/director.h b/engines/director/director.h
index 0648d1c1d67..35f38c58dec 100644
--- a/engines/director/director.h
+++ b/engines/director/director.h
@@ -109,7 +109,7 @@ public:
 	Common::String getCurrentPath() const { return _currentPath; }
 	void setPalette(int id);
 	void setPalette(byte *palette, uint16 count);
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	void loadPalettes();
 	const byte *getPalette() const { return _currentPalette; }
 	uint16 getPaletteColorCount() const { return _currentPaletteLength; }
diff --git a/engines/dm/dm.h b/engines/dm/dm.h
index e330cb6be73..e575020d8d4 100644
--- a/engines/dm/dm.h
+++ b/engines/dm/dm.h
@@ -223,7 +223,7 @@ private:
 public:
 	explicit DMEngine(OSystem *syst, const DMADGameDescription *gameDesc);
 	~DMEngine();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	virtual Common::Error loadGameState(int slot);
 	virtual bool canLoadGameStateCurrently();
diff --git a/engines/draci/detection.cpp b/engines/draci/detection.cpp
index 97dbbee3e77..80ae4b5d708 100644
--- a/engines/draci/detection.cpp
+++ b/engines/draci/detection.cpp
@@ -98,7 +98,7 @@ public:
 		return "Draci Historie (C) 1995 NoSense";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual int getMaximumSaveSlot() const { return 99; }
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual void removeSaveState(const char *target, int slot) const;
diff --git a/engines/drascula/detection.cpp b/engines/drascula/detection.cpp
index 7c60cf53b75..86f642805aa 100644
--- a/engines/drascula/detection.cpp
+++ b/engines/drascula/detection.cpp
@@ -355,7 +355,7 @@ public:
 	}
 
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *gd) const;
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual const ExtraGuiOptions getExtraGuiOptions(const Common::String &target) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/drascula/drascula.h b/engines/drascula/drascula.h
index 856fc8fab06..c6f7d78767b 100644
--- a/engines/drascula/drascula.h
+++ b/engines/drascula/drascula.h
@@ -324,7 +324,7 @@ protected:
 public:
 	DrasculaEngine(OSystem *syst, const DrasculaGameDescription *gameDesc);
 	virtual ~DrasculaEngine();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	virtual void syncSoundSettings();
 
diff --git a/engines/dreamweb/detection.cpp b/engines/dreamweb/detection.cpp
index cb81414c1af..82f5619fded 100644
--- a/engines/dreamweb/detection.cpp
+++ b/engines/dreamweb/detection.cpp
@@ -87,7 +87,7 @@ public:
 	}
 
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
 	virtual void removeSaveState(const char *target, int slot) const;
diff --git a/engines/dreamweb/dreamweb.h b/engines/dreamweb/dreamweb.h
index 542db132335..0af31bbc4e1 100644
--- a/engines/dreamweb/dreamweb.h
+++ b/engines/dreamweb/dreamweb.h
@@ -106,7 +106,7 @@ private:
 protected:
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	GUI::Debugger *getDebugger() { return _console; }
 
diff --git a/engines/fullpipe/detection.cpp b/engines/fullpipe/detection.cpp
index 62c96168a10..51de92a7507 100644
--- a/engines/fullpipe/detection.cpp
+++ b/engines/fullpipe/detection.cpp
@@ -144,7 +144,7 @@ public:
 		return "Full Pipe (C) Pipe Studio";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual int getMaximumSaveSlot() const { return 99; }
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual void removeSaveState(const char *target, int slot) const;
diff --git a/engines/fullpipe/fullpipe.h b/engines/fullpipe/fullpipe.h
index ff843fe5373..8f1b80972c2 100644
--- a/engines/fullpipe/fullpipe.h
+++ b/engines/fullpipe/fullpipe.h
@@ -365,7 +365,7 @@ public:
 
 	virtual bool canLoadGameStateCurrently() { return true; }
 	virtual bool canSaveGameStateCurrently() { return _isSaveAllowed; }
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 };
 
diff --git a/engines/gnap/detection.cpp b/engines/gnap/detection.cpp
index 343180d8875..ace288b2110 100644
--- a/engines/gnap/detection.cpp
+++ b/engines/gnap/detection.cpp
@@ -93,7 +93,7 @@ public:
 		return "Gnap (C) Artech Digital Entertainment 1997";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual int getMaximumSaveSlot() const;
 	virtual SaveStateList listSaves(const char *target) const;
diff --git a/engines/gnap/gnap.h b/engines/gnap/gnap.h
index 45d57fe79ef..dc07f3ac3dc 100644
--- a/engines/gnap/gnap.h
+++ b/engines/gnap/gnap.h
@@ -223,7 +223,7 @@ struct GnapSavegameHeader {
 class GnapEngine : public Engine {
 protected:
 	Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 public:
 	GnapEngine(OSystem *syst, const ADGameDescription *gd);
 	~GnapEngine();
diff --git a/engines/gob/gob.h b/engines/gob/gob.h
index 730d393906f..bfb12bceafe 100644
--- a/engines/gob/gob.h
+++ b/engines/gob/gob.h
@@ -181,7 +181,7 @@ private:
 
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void pauseEngineIntern(bool pause);
 	virtual void syncSoundSettings();
 
diff --git a/engines/griffon/griffon.h b/engines/griffon/griffon.h
index ddee6b106f8..47feb56b426 100644
--- a/engines/griffon/griffon.h
+++ b/engines/griffon/griffon.h
@@ -435,7 +435,7 @@ private:
 
 	virtual bool canLoadGameStateCurrently() { return true; }
 	virtual bool canSaveGameStateCurrently() { return _gameMode == kGameModePlay; }
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 private:
 	Graphics::TransparentSurface *_video, *_videoBuffer, *_videoBuffer2, *_videoBuffer3;
diff --git a/engines/groovie/detection.cpp b/engines/groovie/detection.cpp
index 6ce06bd6926..89931318693 100644
--- a/engines/groovie/detection.cpp
+++ b/engines/groovie/detection.cpp
@@ -361,7 +361,7 @@ public:
 
 	bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *gd) const;
 
-	bool hasFeature(MetaEngineFeature f) const;
+	bool hasFeature(MetaEngineFeature f) const override;
 	SaveStateList listSaves(const char *target) const;
 	int getMaximumSaveSlot() const;
 	void removeSaveState(const char *target, int slot) const;
diff --git a/engines/groovie/groovie.h b/engines/groovie/groovie.h
index f7d9748e916..3238b262847 100644
--- a/engines/groovie/groovie.h
+++ b/engines/groovie/groovie.h
@@ -100,7 +100,7 @@ protected:
 	// Engine APIs
 	Common::Error run();
 
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	virtual bool canLoadGameStateCurrently();
 	virtual bool canSaveGameStateCurrently();
diff --git a/engines/hdb/detection.cpp b/engines/hdb/detection.cpp
index 5a64a8320bc..b2a5b8e3fb0 100644
--- a/engines/hdb/detection.cpp
+++ b/engines/hdb/detection.cpp
@@ -181,7 +181,7 @@ public:
 		return "Hyperspace Delivery Boy! (C) 2001 Monkeystone Games";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual int getMaximumSaveSlot() const;
 	virtual void removeSaveState(const char *target, int slot) const;
 	virtual SaveStateList listSaves(const char *target) const;
diff --git a/engines/hopkins/detection.cpp b/engines/hopkins/detection.cpp
index 4f6039bb2a7..f58e07db1fd 100644
--- a/engines/hopkins/detection.cpp
+++ b/engines/hopkins/detection.cpp
@@ -118,7 +118,7 @@ public:
 		return "Hopkins FBI (C) 1997-2003 MP Entertainment";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/hopkins/hopkins.h b/engines/hopkins/hopkins.h
index ee2592e4051..0a328e4d69d 100644
--- a/engines/hopkins/hopkins.h
+++ b/engines/hopkins/hopkins.h
@@ -129,7 +129,7 @@ private:
 protected:
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	GUI::Debugger *getDebugger() { return _debug; }
 
diff --git a/engines/hugo/detection.cpp b/engines/hugo/detection.cpp
index 88911cdba19..69d9b932ac0 100644
--- a/engines/hugo/detection.cpp
+++ b/engines/hugo/detection.cpp
@@ -149,7 +149,7 @@ public:
 	}
 
 	bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *gd) const;
-	bool hasFeature(MetaEngineFeature f) const;
+	bool hasFeature(MetaEngineFeature f) const override;
 
 	int getMaximumSaveSlot() const;
 	SaveStateList listSaves(const char *target) const;
diff --git a/engines/hugo/hugo.h b/engines/hugo/hugo.h
index 85209afe068..bec1967b02a 100644
--- a/engines/hugo/hugo.h
+++ b/engines/hugo/hugo.h
@@ -287,7 +287,7 @@ public:
 	void setMaxScore(const int newScore);
 	Common::Error saveGameState(int slot, const Common::String &desc);
 	Common::Error loadGameState(int slot);
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	const char *getCopyrightString() const;
 
 	Common::String getSavegameFilename(int slot);
diff --git a/engines/illusions/bbdou/illusions_bbdou.h b/engines/illusions/bbdou/illusions_bbdou.h
index f9311e17231..bb562ad9a57 100644
--- a/engines/illusions/bbdou/illusions_bbdou.h
+++ b/engines/illusions/bbdou/illusions_bbdou.h
@@ -63,7 +63,7 @@ public:
 	IllusionsEngine_BBDOU(OSystem *syst, const IllusionsGameDescription *gd);
 protected:
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 public:
 	ScriptMan *_scriptMan;
 	TriggerFunctions *_triggerFunctions;
diff --git a/engines/illusions/detection.cpp b/engines/illusions/detection.cpp
index 72c56201084..d4ea9871e49 100644
--- a/engines/illusions/detection.cpp
+++ b/engines/illusions/detection.cpp
@@ -130,7 +130,7 @@ public:
 		return "(C) The Illusions Gaming Company";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual int getMaximumSaveSlot() const;
 	virtual SaveStateList listSaves(const char *target) const;
diff --git a/engines/illusions/duckman/illusions_duckman.h b/engines/illusions/duckman/illusions_duckman.h
index 0dfdf3a10f7..91270fff99c 100644
--- a/engines/illusions/duckman/illusions_duckman.h
+++ b/engines/illusions/duckman/illusions_duckman.h
@@ -81,7 +81,7 @@ public:
 	IllusionsEngine_Duckman(OSystem *syst, const IllusionsGameDescription *gd);
 protected:
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 public:
 
 	uint32 _prevSceneId;
diff --git a/engines/kyra/kyra_v1.h b/engines/kyra/kyra_v1.h
index 1f15f0e6367..a96244e5827 100644
--- a/engines/kyra/kyra_v1.h
+++ b/engines/kyra/kyra_v1.h
@@ -257,7 +257,7 @@ protected:
 	}
 
 	virtual ::GUI::Debugger *getDebugger();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void pauseEngineIntern(bool pause);
 
 	// intern
diff --git a/engines/lab/detection.cpp b/engines/lab/detection.cpp
index a2570f65b72..e75078d2c0d 100644
--- a/engines/lab/detection.cpp
+++ b/engines/lab/detection.cpp
@@ -138,7 +138,7 @@ public:
 		return true;
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
 	void removeSaveState(const char *target, int slot) const;
diff --git a/engines/lab/lab.h b/engines/lab/lab.h
index aedf0181ec8..b0d2f516431 100644
--- a/engines/lab/lab.h
+++ b/engines/lab/lab.h
@@ -213,7 +213,7 @@ public:
 	Common::Platform getPlatform() const;
 	uint32 getFeatures() const;
 
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	Common::String generateSaveFileName(uint slot);
 
 	void changeVolume(int delta);
diff --git a/engines/lastexpress/lastexpress.h b/engines/lastexpress/lastexpress.h
index 0edd3251180..e61723f85b7 100644
--- a/engines/lastexpress/lastexpress.h
+++ b/engines/lastexpress/lastexpress.h
@@ -71,7 +71,7 @@ class LastExpressEngine : public Engine {
 protected:
 	// Engine APIs
 	Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual Debugger *getDebugger() { return _debugger; }
 
 public:
diff --git a/engines/lilliput/detection.cpp b/engines/lilliput/detection.cpp
index 6ecb8f9f9cf..26a42159905 100644
--- a/engines/lilliput/detection.cpp
+++ b/engines/lilliput/detection.cpp
@@ -139,7 +139,7 @@ public:
 	}
 
 	bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *gd) const;
-	bool hasFeature(MetaEngineFeature f) const;
+	bool hasFeature(MetaEngineFeature f) const override;
 
 	int getMaximumSaveSlot() const;
 	SaveStateList listSaves(const char *target) const;
diff --git a/engines/lilliput/lilliput.h b/engines/lilliput/lilliput.h
index cb4e43c3dab..b9ad24a3a8b 100644
--- a/engines/lilliput/lilliput.h
+++ b/engines/lilliput/lilliput.h
@@ -323,7 +323,7 @@ public:
 	GameType getGameType() const;
 	Common::Platform getPlatform() const;
 
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	const char *getCopyrightString() const;
 
 	Common::String getSavegameFilename(int slot);
diff --git a/engines/lure/detection.cpp b/engines/lure/detection.cpp
index be62b5b4809..093d010216d 100644
--- a/engines/lure/detection.cpp
+++ b/engines/lure/detection.cpp
@@ -259,7 +259,7 @@ public:
 		return "Lure of the Temptress (C) Revolution";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/lure/lure.h b/engines/lure/lure.h
index dd9fb18f5b9..b3008ff48f3 100644
--- a/engines/lure/lure.h
+++ b/engines/lure/lure.h
@@ -99,7 +99,7 @@ public:
 			return err;
 		return go();
 	}
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void syncSoundSettings();
 	virtual void pauseEngineIntern(bool pause);
 
diff --git a/engines/macventure/macventure.h b/engines/macventure/macventure.h
index 3f2c181b14e..69fe6599202 100644
--- a/engines/macventure/macventure.h
+++ b/engines/macventure/macventure.h
@@ -192,7 +192,7 @@ public:
 	MacVentureEngine(OSystem *syst, const ADGameDescription *gameDesc);
 	~MacVentureEngine();
 
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	virtual Common::Error run();
 
diff --git a/engines/made/made.h b/engines/made/made.h
index bd9b96be511..32713c032a3 100644
--- a/engines/made/made.h
+++ b/engines/made/made.h
@@ -78,7 +78,7 @@ public:
 	MadeEngine(OSystem *syst, const MadeGameDescription *gameDesc);
 	virtual ~MadeEngine();
 
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void syncSoundSettings();
 
 	virtual GUI::Debugger *getDebugger();
diff --git a/engines/mads/detection.cpp b/engines/mads/detection.cpp
index 3f0f8e57331..b968a7d1e7b 100644
--- a/engines/mads/detection.cpp
+++ b/engines/mads/detection.cpp
@@ -171,7 +171,7 @@ public:
 		return "MADS (C) Microprose";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/mads/mads.h b/engines/mads/mads.h
index 52f71f7c79c..fe7dfeced7c 100644
--- a/engines/mads/mads.h
+++ b/engines/mads/mads.h
@@ -90,7 +90,7 @@ private:
 protected:
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 public:
 	Debugger *_debugger;
 	Dialogs *_dialogs;
diff --git a/engines/mortevielle/detection.cpp b/engines/mortevielle/detection.cpp
index f94182922cd..bcf64bbe338 100644
--- a/engines/mortevielle/detection.cpp
+++ b/engines/mortevielle/detection.cpp
@@ -73,7 +73,7 @@ public:
 	}
 
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual int getMaximumSaveSlot() const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const;
diff --git a/engines/mortevielle/mortevielle.h b/engines/mortevielle/mortevielle.h
index 5d00547f4e0..4cc681fc632 100644
--- a/engines/mortevielle/mortevielle.h
+++ b/engines/mortevielle/mortevielle.h
@@ -439,7 +439,7 @@ public:
 
 	MortevielleEngine(OSystem *system, const MortevielleGameDescription *gameDesc);
 	~MortevielleEngine();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual bool canLoadGameStateCurrently();
 	virtual bool canSaveGameStateCurrently();
 	virtual Common::Error loadGameState(int slot);
diff --git a/engines/neverhood/detection.cpp b/engines/neverhood/detection.cpp
index 0d4a7278bbe..dff01e12f58 100644
--- a/engines/neverhood/detection.cpp
+++ b/engines/neverhood/detection.cpp
@@ -213,7 +213,7 @@ public:
 		return "The Neverhood Chronicles (C) The Neverhood, Inc.";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual const ExtraGuiOptions getExtraGuiOptions(const Common::String &target) const;
 	SaveStateList listSaves(const char *target) const;
diff --git a/engines/neverhood/neverhood.h b/engines/neverhood/neverhood.h
index 90055eeb9d5..cb50e259d1b 100644
--- a/engines/neverhood/neverhood.h
+++ b/engines/neverhood/neverhood.h
@@ -73,7 +73,7 @@ public:
 	uint16 getVersion() const;
 	Common::Platform getPlatform() const;
 	Common::Language getLanguage() const;
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	bool isDemo() const;
 	bool applyResourceFixes() const;
 	Common::String getTargetName() { return _targetName; };
diff --git a/engines/parallaction/detection.cpp b/engines/parallaction/detection.cpp
index 2d0d3b850b9..62103525126 100644
--- a/engines/parallaction/detection.cpp
+++ b/engines/parallaction/detection.cpp
@@ -234,7 +234,7 @@ public:
 		return "Nippon Safes Inc. (C) Dynabyte";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/parallaction/parallaction.h b/engines/parallaction/parallaction.h
index 6eb01068542..e9026d606c0 100644
--- a/engines/parallaction/parallaction.h
+++ b/engines/parallaction/parallaction.h
@@ -271,7 +271,7 @@ public:
 		return go();
 	}
 
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void pauseEngineIntern(bool pause);
 	virtual GUI::Debugger *getDebugger();
 
diff --git a/engines/pegasus/pegasus.h b/engines/pegasus/pegasus.h
index 3e41181ec08..09c9a7ff5d5 100644
--- a/engines/pegasus/pegasus.h
+++ b/engines/pegasus/pegasus.h
@@ -77,7 +77,7 @@ public:
 
 	// Engine stuff
 	const PegasusGameDescription *_gameDescription;
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	GUI::Debugger *getDebugger();
 	bool canLoadGameStateCurrently();
 	bool canSaveGameStateCurrently();
diff --git a/engines/pink/detection.cpp b/engines/pink/detection.cpp
index c57c81b51d3..b9243c7ca15 100644
--- a/engines/pink/detection.cpp
+++ b/engines/pink/detection.cpp
@@ -68,7 +68,7 @@ public:
 		return "Pink Panther (C) Wanderlust Interactive";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual int getMaximumSaveSlot() const { return 99; }
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual void removeSaveState(const char *target, int slot) const;
diff --git a/engines/plumbers/detection.cpp b/engines/plumbers/detection.cpp
index 57cd4395e9a..30d28d99702 100644
--- a/engines/plumbers/detection.cpp
+++ b/engines/plumbers/detection.cpp
@@ -85,7 +85,7 @@ public:
 		return "Plumbers Don't Wear Ties (C) 1993-94 Kirin Entertainment";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 };
 
diff --git a/engines/prince/detection.cpp b/engines/prince/detection.cpp
index 5390e3640fe..47e15eabbe8 100644
--- a/engines/prince/detection.cpp
+++ b/engines/prince/detection.cpp
@@ -165,7 +165,7 @@ public:
 	}
 
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual int getMaximumSaveSlot() const { return 99; }
 	virtual SaveStateList listSaves(const char *target) const;
 	SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const;
diff --git a/engines/prince/prince.h b/engines/prince/prince.h
index 9048bd5e816..a6c5a12b907 100644
--- a/engines/prince/prince.h
+++ b/engines/prince/prince.h
@@ -281,7 +281,7 @@ public:
 
 	bool scummVMSaveLoadDialog(bool isSave);
 
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void pauseEngineIntern(bool pause);
 	virtual bool canSaveGameStateCurrently();
 	virtual bool canLoadGameStateCurrently();
diff --git a/engines/queen/queen.h b/engines/queen/queen.h
index 411fdf98e39..5f2b8cf8470 100644
--- a/engines/queen/queen.h
+++ b/engines/queen/queen.h
@@ -121,7 +121,7 @@ protected:
 	// Engine APIs
 	virtual Common::Error run();
 	virtual GUI::Debugger *getDebugger();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void syncSoundSettings();
 
 
diff --git a/engines/saga/detection.cpp b/engines/saga/detection.cpp
index ed8d7cd66dc..ea3bb33e44f 100644
--- a/engines/saga/detection.cpp
+++ b/engines/saga/detection.cpp
@@ -124,7 +124,7 @@ public:
 		return "Inherit the Earth (C) Wyrmkeep Entertainment";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 
 	virtual Common::Error createInstance(OSystem *syst, Engine **engine) const {
 		return AdvancedMetaEngine::createInstance(syst, engine);
diff --git a/engines/saga/saga.h b/engines/saga/saga.h
index db581f2c8cb..29234084959 100644
--- a/engines/saga/saga.h
+++ b/engines/saga/saga.h
@@ -467,7 +467,7 @@ class SagaEngine : public Engine {
 public:
 	// Engine APIs
 	virtual Common::Error run();
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	void syncSoundSettings();
 	void pauseEngineIntern(bool pause);
 
diff --git a/engines/sci/sci.h b/engines/sci/sci.h
index 94dfb1dfb73..087aab5f789 100644
--- a/engines/sci/sci.h
+++ b/engines/sci/sci.h
@@ -255,7 +255,7 @@ public:
 
 	// Engine APIs
 	virtual Common::Error run();
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	void pauseEngineIntern(bool pause);
 	virtual GUI::Debugger *getDebugger();
 	Console *getSciDebugger();
diff --git a/engines/scumm/scumm.h b/engines/scumm/scumm.h
index 958b6d8d469..019ff1e6987 100644
--- a/engines/scumm/scumm.h
+++ b/engines/scumm/scumm.h
@@ -430,7 +430,7 @@ public:
 	}
 	virtual void errorString(const char *buf_input, char *buf_output, int buf_output_size);
 	virtual GUI::Debugger *getDebugger();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void syncSoundSettings();
 
 	virtual Common::Error loadGameState(int slot);
diff --git a/engines/sherlock/detection.cpp b/engines/sherlock/detection.cpp
index b54b7064a42..847681cfe0d 100644
--- a/engines/sherlock/detection.cpp
+++ b/engines/sherlock/detection.cpp
@@ -171,7 +171,7 @@ public:
 	/**
 	 * Returns a list of features the game's MetaEngine support
 	 */
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 
 	/**
 	 * Return a list of savegames
diff --git a/engines/sherlock/sherlock.h b/engines/sherlock/sherlock.h
index 0b4333ea3a2..d729bb4eb77 100644
--- a/engines/sherlock/sherlock.h
+++ b/engines/sherlock/sherlock.h
@@ -103,7 +103,7 @@ protected:
 	/**
 	 * Returns a list of features the game itself supports
 	 */
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	/**
 	 * Load game configuration esttings
diff --git a/engines/sky/sky.h b/engines/sky/sky.h
index 374302b8d3a..36bcc7c3c2a 100644
--- a/engines/sky/sky.h
+++ b/engines/sky/sky.h
@@ -108,7 +108,7 @@ protected:
 		return go();
 	}
 	virtual GUI::Debugger *getDebugger();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	byte _fastMode;
 
diff --git a/engines/startrek/detection.cpp b/engines/startrek/detection.cpp
index 4135481d02d..c1fcb60d031 100644
--- a/engines/startrek/detection.cpp
+++ b/engines/startrek/detection.cpp
@@ -334,7 +334,7 @@ public:
 		return "Star Trek: 25th Anniversary, Star Trek: Judgment Rites (C) Interplay";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 
 	virtual SaveStateList listSaves(const char *target) const;
diff --git a/engines/supernova/detection.cpp b/engines/supernova/detection.cpp
index c511c2a2b5e..add4c67cba9 100644
--- a/engines/supernova/detection.cpp
+++ b/engines/supernova/detection.cpp
@@ -114,7 +114,7 @@ public:
 		return "Mission Supernova (C) 1994 Thomas and Steffen Dingel";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual void removeSaveState(const char *target, int slot) const;
diff --git a/engines/supernova/supernova.h b/engines/supernova/supernova.h
index 8139d5f00e9..8e51a35df9c 100644
--- a/engines/supernova/supernova.h
+++ b/engines/supernova/supernova.h
@@ -69,7 +69,7 @@ public:
 	virtual bool canLoadGameStateCurrently();
 	virtual Common::Error saveGameState(int slot, const Common::String &desc);
 	virtual bool canSaveGameStateCurrently();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void pauseEngineIntern(bool pause);
 
 	GameManager *_gm;
diff --git a/engines/sword1/sword1.h b/engines/sword1/sword1.h
index 32375e9a08c..ae22bffbaf3 100644
--- a/engines/sword1/sword1.h
+++ b/engines/sword1/sword1.h
@@ -105,7 +105,7 @@ protected:
 			return err;
 		return go();
 	}
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void syncSoundSettings();
 
 	GUI::Debugger *getDebugger() { return _console; }
diff --git a/engines/sword2/sword2.h b/engines/sword2/sword2.h
index 65d1a955fbb..5e17f34f442 100644
--- a/engines/sword2/sword2.h
+++ b/engines/sword2/sword2.h
@@ -144,7 +144,7 @@ protected:
 	// Engine APIs
 	virtual Common::Error run();
 	virtual GUI::Debugger *getDebugger();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void syncSoundSettings();
 	virtual void pauseEngineIntern(bool pause);
 
diff --git a/engines/sword25/detection.cpp b/engines/sword25/detection.cpp
index 44e3f34708f..515a05ecdb2 100644
--- a/engines/sword25/detection.cpp
+++ b/engines/sword25/detection.cpp
@@ -70,7 +70,7 @@ public:
 	}
 
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual const ExtraGuiOptions getExtraGuiOptions(const Common::String &target) const;
 	virtual int getMaximumSaveSlot() const { return Sword25::PersistenceService::getSlotCount(); }
 	virtual SaveStateList listSaves(const char *target) const;
diff --git a/engines/sword25/sword25.h b/engines/sword25/sword25.h
index c08f20e3b30..0c7bf865169 100644
--- a/engines/sword25/sword25.h
+++ b/engines/sword25/sword25.h
@@ -78,7 +78,7 @@ private:
 
 protected:
 	virtual Common::Error run();
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 // 	void pauseEngineIntern(bool pause);	// TODO: Implement this!!!
 // 	void syncSoundSettings();	// TODO: Implement this!!!
 // 	Common::Error loadGameState(int slot);	// TODO: Implement this?
diff --git a/engines/teenagent/teenagent.h b/engines/teenagent/teenagent.h
index f33c684afd5..255e052390c 100644
--- a/engines/teenagent/teenagent.h
+++ b/engines/teenagent/teenagent.h
@@ -91,7 +91,7 @@ public:
 	virtual Common::Error saveGameState(int slot, const Common::String &desc);
 	virtual bool canLoadGameStateCurrently() { return true; }
 	virtual bool canSaveGameStateCurrently() { return !_sceneBusy; }
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	GUI::Debugger *getDebugger() { return console; }
 
diff --git a/engines/testbed/testbed.h b/engines/testbed/testbed.h
index 5ea05feba2d..df007d4ab5c 100644
--- a/engines/testbed/testbed.h
+++ b/engines/testbed/testbed.h
@@ -52,7 +52,7 @@ public:
 	 */
 	void invokeTestsuites(TestbedConfigManager &cfMan);
 
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 
 private:
 	Common::Array<Testsuite *> _testsuiteList;
diff --git a/engines/tinsel/tinsel.h b/engines/tinsel/tinsel.h
index 9e4ce61b04b..815d3f3e755 100644
--- a/engines/tinsel/tinsel.h
+++ b/engines/tinsel/tinsel.h
@@ -163,7 +163,7 @@ protected:
 	// Engine APIs
 	virtual void initializePath(const Common::FSNode &gamePath);
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	Common::Error loadGameState(int slot);
 #if 0
 	Common::Error saveGameState(int slot, const Common::String &desc);
diff --git a/engines/titanic/detection.cpp b/engines/titanic/detection.cpp
index e4e8f5ac9a4..2b7252c9917 100644
--- a/engines/titanic/detection.cpp
+++ b/engines/titanic/detection.cpp
@@ -74,7 +74,7 @@ public:
 		return "Starship Titanic (C) The Digital Village";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/titanic/titanic.h b/engines/titanic/titanic.h
index a796719b0ef..4b4e1e081af 100644
--- a/engines/titanic/titanic.h
+++ b/engines/titanic/titanic.h
@@ -107,7 +107,7 @@ protected:
 	// Engine APIs
 	virtual void initializePath(const Common::FSNode &gamePath);
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 public:
 	Debugger *_debugger;
 	Events *_events;
diff --git a/engines/toltecs/detection.cpp b/engines/toltecs/detection.cpp
index 7f7b3db2a95..39374951748 100644
--- a/engines/toltecs/detection.cpp
+++ b/engines/toltecs/detection.cpp
@@ -248,7 +248,7 @@ public:
 		return "3 Skulls of the Toltecs (C) Revistronic 1996";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual const ExtraGuiOptions getExtraGuiOptions(const Common::String &target) const;
 	SaveStateList listSaves(const char *target) const;
diff --git a/engines/toltecs/toltecs.h b/engines/toltecs/toltecs.h
index 1c9e9366c7d..dea22abe08c 100644
--- a/engines/toltecs/toltecs.h
+++ b/engines/toltecs/toltecs.h
@@ -103,7 +103,7 @@ public:
 	ToltecsEngine(OSystem *syst, const ToltecsGameDescription *gameDesc);
 	virtual ~ToltecsEngine();
 
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	Common::RandomSource *_rnd;
 	const ToltecsGameDescription *_gameDescription;
diff --git a/engines/tony/detection.cpp b/engines/tony/detection.cpp
index 62e6a178972..9ae77f085f6 100644
--- a/engines/tony/detection.cpp
+++ b/engines/tony/detection.cpp
@@ -83,7 +83,7 @@ public:
 		return "Tony Tough and the Night of Roasted Moths (C) Protonic Interactive";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/tony/tony.h b/engines/tony/tony.h
index cb9f5fe3229..f3ada4f34e5 100644
--- a/engines/tony/tony.h
+++ b/engines/tony/tony.h
@@ -96,7 +96,7 @@ private:
 protected:
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 public:
 	LPCUSTOMFUNCTION _funcList[300];
 	Common::String _funcListStrings[300];
diff --git a/engines/touche/touche.h b/engines/touche/touche.h
index be636738a88..e1cede3dc6f 100644
--- a/engines/touche/touche.h
+++ b/engines/touche/touche.h
@@ -473,7 +473,7 @@ public:
 
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	virtual void syncSoundSettings();
 	GUI::Debugger *getDebugger() { return _console; }
 
diff --git a/engines/tsage/tsage.h b/engines/tsage/tsage.h
index ca29d682431..02cb84eceb6 100644
--- a/engines/tsage/tsage.h
+++ b/engines/tsage/tsage.h
@@ -65,7 +65,7 @@ private:
 public:
 	TSageEngine(OSystem *system, const tSageGameDescription *gameDesc);
 	~TSageEngine();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	MemoryManager _memoryManager;
 	Debugger *_debugger;
diff --git a/engines/tucker/tucker.h b/engines/tucker/tucker.h
index 6ed32704715..f4760aee710 100644
--- a/engines/tucker/tucker.h
+++ b/engines/tucker/tucker.h
@@ -449,7 +449,7 @@ public:
 	virtual ~TuckerEngine();
 
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	GUI::Debugger *getDebugger() { return _console; }
 
 	WARN_UNUSED_RESULT static SavegameError readSavegameHeader(Common::InSaveFile *file, SavegameHeader &header, bool skipThumbnail = true);
diff --git a/engines/voyeur/detection.cpp b/engines/voyeur/detection.cpp
index 287dbfe97c4..6ef04bb0efa 100644
--- a/engines/voyeur/detection.cpp
+++ b/engines/voyeur/detection.cpp
@@ -82,7 +82,7 @@ public:
 		return "Voyeur (C) Philips P.O.V. Entertainment Group";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/voyeur/voyeur.h b/engines/voyeur/voyeur.h
index a098ba9e62d..081b73d530a 100644
--- a/engines/voyeur/voyeur.h
+++ b/engines/voyeur/voyeur.h
@@ -158,7 +158,7 @@ private:
 protected:
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 public:
 	BoltFile *_bVoy;
 	Debugger *_debugger;
diff --git a/engines/wage/detection.cpp b/engines/wage/detection.cpp
index 49a01f8f450..246bcc7e258 100644
--- a/engines/wage/detection.cpp
+++ b/engines/wage/detection.cpp
@@ -72,7 +72,7 @@ public:
 	}
 
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
 	virtual void removeSaveState(const char *target, int slot) const;
diff --git a/engines/wage/wage.h b/engines/wage/wage.h
index cb4e8a35206..ee3ef0f1af2 100644
--- a/engines/wage/wage.h
+++ b/engines/wage/wage.h
@@ -116,7 +116,7 @@ public:
 	WageEngine(OSystem *syst, const ADGameDescription *gameDesc);
 	~WageEngine();
 
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	virtual Common::Error run();
 
diff --git a/engines/wintermute/wintermute.h b/engines/wintermute/wintermute.h
index fcf4f958ce9..ba7b3a88949 100644
--- a/engines/wintermute/wintermute.h
+++ b/engines/wintermute/wintermute.h
@@ -62,7 +62,7 @@ public:
 	void trigDebugger() { _trigDebug = true; }
 
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 	Common::SaveFileManager *getSaveFileMan() { return _saveFileMan; }
 	virtual Common::Error loadGameState(int slot);
 	virtual bool canLoadGameStateCurrently();
diff --git a/engines/xeen/detection.cpp b/engines/xeen/detection.cpp
index 45490f39fa9..447f0af7231 100644
--- a/engines/xeen/detection.cpp
+++ b/engines/xeen/detection.cpp
@@ -132,7 +132,7 @@ public:
 		return "Xeen (C) 1992-1993 New World Computing, Inc.";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/xeen/xeen.h b/engines/xeen/xeen.h
index 2f231c5b088..70b976d9603 100644
--- a/engines/xeen/xeen.h
+++ b/engines/xeen/xeen.h
@@ -132,7 +132,7 @@ private:
 
 	// Engine APIs
 	virtual Common::Error run();
-	virtual bool hasFeature(EngineFeature f) const;
+	virtual bool hasFeature(EngineFeature f) const override;
 
 	/**
 	 * Outer gameplay loop responsible for dispatching control to game-specific
diff --git a/engines/zvision/detection.cpp b/engines/zvision/detection.cpp
index 1ce98714de1..d515f8c13b7 100644
--- a/engines/zvision/detection.cpp
+++ b/engines/zvision/detection.cpp
@@ -75,7 +75,7 @@ public:
 		return "Z-Vision (C) 1996 Activision";
 	}
 
-	virtual bool hasFeature(MetaEngineFeature f) const;
+	virtual bool hasFeature(MetaEngineFeature f) const override;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 	SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
diff --git a/engines/zvision/zvision.h b/engines/zvision/zvision.h
index 0044532dda0..f599eafb26f 100644
--- a/engines/zvision/zvision.h
+++ b/engines/zvision/zvision.h
@@ -240,7 +240,7 @@ public:
 	bool ifQuit();
 
 	// Engine features
-	bool hasFeature(EngineFeature f) const;
+	bool hasFeature(EngineFeature f) const override;
 	bool canLoadGameStateCurrently();
 	bool canSaveGameStateCurrently();
 	Common::Error loadGameState(int slot);