diff --git a/source/common/gamemain.cpp b/source/common/gamemain.cpp
deleted file mode 100644
index 653a5cd51..000000000
--- a/source/common/gamemain.cpp
+++ /dev/null
@@ -1,235 +0,0 @@
-#include "zstring.h"
-#include "gameconfigfile.h"
-#include "gamecontrol.h"
-#include "resourcefile.h"
-#include "sc_man.h"
-#include "i_specialpaths.h"
-#include "inputstate.h"
-#include "c_cvars.h"
-#include "../../glbackend/glbackend.h"
-
-
-// Currently there is no global state for the current game. This is a temporary workaround because the video init code needs to do a few things based on the active game.
-
-FString currentGame;	
-
-namespace Duke
-{
-	extern GameInterface Interface;
-}
-namespace Redneck
-{
-	extern GameInterface Interface;
-}
-namespace Blood
-{
-	extern GameInterface Interface;
-}
-namespace ShadowWarrior
-{
-	extern GameInterface Interface;
-}
-
-GameInterface *CheckFrontend()
-{
-	FILE* f = fopen("blood.rff", "rb");
-	if (f)
-	{
-		currentGame = "Blood";
-		fclose(f);
-		return &Blood::Interface;
-	}
-	else
-	{
-		f = fopen("redneck.grp", "rb");
-		if (f)
-		{
-			currentGame = "Redneck";
-			fseek(f, 0, SEEK_END);
-			auto pos = ftell(f);
-			// Quick hack to distinguish these two. This won't survive until production but for testing it's sufficient.
-			if (pos > 190'000'000) currentGame = "RedneckRides";
-			fclose(f);
-			return &Redneck::Interface;
-		}
-		else
-		{
-			f = fopen("sw.grp", "rb");
-			if (f)
-			{
-				currentGame = "ShadowWarrior";
-				fclose(f);
-				return &ShadowWarrior::Interface;
-			}
-			f = fopen("fury.grp", "rb");
-			if (f)
-			{
-				currentGame = "IonFury";
-				fclose(f);
-				return &Duke::Interface;
-			}
-			f = fopen("nam.grp", "rb");
-			if (f)
-			{
-				currentGame = "Nam";
-				fclose(f);
-				return &Duke::Interface;
-			}
-			f = fopen("ww2gi.grp", "rb");
-			if (f)
-			{
-				currentGame = "WW2GI";
-				fclose(f);
-				return &Duke::Interface;
-			}
-			else
-			{
-				currentGame = "Duke";
-			}
-			return &Duke::Interface;
-		}
-	}
-}
-
-void ChooseGame()
-{
-	auto dir = Args->CheckValue("-game");
-	if (dir && !chdir(dir))
-	{
-		gi = CheckFrontend();
-		return;
-	}
-
-	TArray<FString> paths;
-	std::vector<std::wstring> wgames;
-	TArray<TASKDIALOG_BUTTON> buttons;
-	char* token;
-	
-	FileReader fr;
-	if (fr.OpenFile("./games.list"))
-	{
-		auto filedata = fr.ReadPadded(1);
-
-		auto script = scriptfile_fromstring((char*)filedata.Data());
-		int id = 1000;
-		while (!scriptfile_eof(script))
-		{
-			scriptfile_getstring(script, &token);
-			if (scriptfile_eof(script))
-			{
-				break;
-			}
-			FString game = token;
-			scriptfile_getstring(script, &token);
-			paths.Push(token);
-			FStringf display("%s\n%s", game.GetChars(), token);
-			wgames.push_back(display.WideString());
-			buttons.Push({ id++, wgames.back().c_str() });
-		}
-	}
-	if (paths.Size() == 0)
-	{
-		exit(1);
-	}
-
-	int nResult = 0;
-
-	TASKDIALOGCONFIG stTaskConfig;
-	ZeroMemory(&stTaskConfig, sizeof(stTaskConfig));
-
-	stTaskConfig.cbSize = sizeof(TASKDIALOGCONFIG);
-	stTaskConfig.hwndParent = NULL;
-	stTaskConfig.hInstance = NULL;
-
-	stTaskConfig.dwFlags = TDF_ALLOW_DIALOG_CANCELLATION| TDF_USE_COMMAND_LINKS;
-
-	if (!gi)
-	{
-		// Open a popup to select the game.
-		// The entire startup code just doesn't work right if this isn't checked as the very first thing.
-		stTaskConfig.pszWindowTitle = L"Demolition";
-		stTaskConfig.pszMainInstruction = L"Choose your game";
-		stTaskConfig.pszContent = L"";
-		stTaskConfig.cButtons = buttons.Size();
-
-		stTaskConfig.pButtons = buttons.Data();
-		stTaskConfig.nDefaultButton = 1000;
-
-		if (SUCCEEDED(TaskDialogIndirect(&stTaskConfig, &nResult, NULL, NULL)))
-		{
-			if (nResult >= 1000 && nResult < 1000 +(int)buttons.Size())
-			{
-				nResult -= 1000;
-				chdir(paths[nResult]);
-				gi = CheckFrontend();
-			}
-		}
-		if (gi == nullptr) exit(1);
-	}
-}
-
-
-
-
-
-std::unique_ptr<FResourceFile> engine_res;
-
-// The resourge manager in cache1d is far too broken to add some arbitrary file without some adjustment.
-// For now, keep this file here, until the resource management can be redone in a more workable fashion.
-extern FString progdir;
-
-void InitBaseRes()
-{
-	if (!engine_res)
-	{
-		// If we get here for the first time, load the engine-internal data.
-		FString baseres = progdir + "demolition.pk3";
-		engine_res.reset(FResourceFile::OpenResourceFile(baseres, true, true));
-		if (!engine_res)
-		{
-			I_Error("Engine resources (%s) not found", baseres.GetChars());
-		}
-	}
-}
-
-FileReader openFromBaseResource(const char* fn)
-{
-	InitBaseRes();
-	auto lump = engine_res->FindLump(fn);
-	if (lump) return lump->NewReader();
-	// Also look in game filtered directories.
-	FStringf filtername("filter/game-%s/%s", currentGame.GetChars(), fn);
-	lump = engine_res->FindLump(filtername);
-	if (lump) return lump->NewReader();
-	return FileReader(nullptr);
-
-}
-
-
-
-int GameMain()
-{
-	try
-	{
-		// Write to the DOCUMENTS directory, not the game directory
-		
-		FString logpath = M_GetDocumentsPath() + "demolition.log";
-		OSD_SetLogFile(logpath);
-		CONFIG_ReadCombatMacros();
-
-		// Startup dialog must be presented here so that everything can be set up before reading the keybinds.
-		G_LoadConfig(currentGame);
-		CONFIG_Init();
-		r = gi->app_main(buildargc, (const char**)buildargv);
-	}
-	catch (const std::runtime_error & err)
-	{
-		wm_msgbox("Error", "%s", err.what());
-		return 3;
-	}
-	catch (const ExitEvent & exit)
-	{
-		// Just let the rest of the function execute.
-		r = exit.Reason();
-	}
-}
\ No newline at end of file