Elideb

#if UNITY_STANDALONE && !STEAM_BUILD
  [MenuItem("Build/Switch to Steam")]
#endif
  public static void SwitchToSteam() {
    string defines = PlayerSettings.GetScriptingDefineSymbolsForGroup(BuildTargetGroup.Standalone);
    defines = AddCompilerDefines(defines, "STEAM_BUILD");
    defines = RemoveCompilerDefines(defines, "GOG_BUILD");

    UnityEngine.Debug.Log("Compiling with DEFINE: '" + defines + "'");
    PlayerSettings.SetScriptingDefineSymbolsForGroup(BuildTargetGroup.Standalone, defines);