Index: ps/trunk/binaries/system/readme.txt
===================================================================
--- ps/trunk/binaries/system/readme.txt
+++ ps/trunk/binaries/system/readme.txt
@@ -44,7 +44,6 @@
 
 Configuration:
 -conf=KEY:VALUE     set a config value
--g=F                set the gamma correction to 'F' (default 1.0)
 -nosound            disable audio
 -noUserMod          disable loading of the user mod
 -shadows            enable shadows
Index: ps/trunk/source/ps/GameSetup/Config.h
===================================================================
--- ps/trunk/source/ps/GameSetup/Config.h
+++ ps/trunk/source/ps/GameSetup/Config.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2019 Wildfire Games.
+/* Copyright (C) 2020 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -78,7 +78,6 @@
 // Use smooth LOS interpolation
 extern bool g_SmoothLOS;
 
-extern float g_Gamma;
 // name of configured render path (depending on OpenGL extensions, this may not be
 // the render path that is actually in use right now)
 extern CStr g_RenderPath;
Index: ps/trunk/source/ps/GameSetup/Config.cpp
===================================================================
--- ps/trunk/source/ps/GameSetup/Config.cpp
+++ ps/trunk/source/ps/GameSetup/Config.cpp
@@ -1,4 +1,4 @@
-/* Copyright (C) 2019 Wildfire Games.
+/* Copyright (C) 2020 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -56,8 +56,6 @@
 bool g_PostProc = false;
 bool g_SmoothLOS = false;
 
-float g_Gamma = 1.0f;
-
 CStr g_RenderPath = "default";
 
 int g_xres, g_yres;
@@ -131,13 +129,6 @@
 		}
 	}
 
-	if (args.Has("g"))
-	{
-		g_Gamma = args.Get("g").ToFloat();
-		if (g_Gamma == 0.0f)
-			g_Gamma = 1.0f;
-	}
-
 //	if (args.Has("listfiles"))
 //		trace_enable(true);
 
Index: ps/trunk/source/ps/VideoMode.cpp
===================================================================
--- ps/trunk/source/ps/VideoMode.cpp
+++ ps/trunk/source/ps/VideoMode.cpp
@@ -1,4 +1,4 @@
-/* Copyright (C) 2018 Wildfire Games.
+/* Copyright (C) 2020 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -242,13 +242,6 @@
 	ogl_Init(); // required after each mode change
 	// (TODO: does that mean we need to call this when toggling fullscreen later?)
 
-#if !OS_ANDROID
-	u16 ramp[256];
-	SDL_CalculateGammaRamp(g_Gamma, ramp);
-	if (SDL_SetWindowGammaRamp(m_Window, ramp, ramp, ramp) < 0)
-		LOGWARNING("SDL_SetWindowGammaRamp failed");
-#endif
-
 	m_IsInitialised = true;
 
 	if (!m_ConfigFullscreen)