Thanks for the reply. I set the orm to backbuffer, but it has the same problem and same output. I tried TwoWorlds_RADEON.exe which is for radeon compatibility or the likes, same story. I also tried running TwoWorlds.exe and TwoWorlds_RADEON.exe in safe mode, using the -safemode flag. I also was searching for any graphics options with which I could make the game only use one backbuffer, but couldn't find a way. The only graphical options I could find in the registry are as follows: HKEY_CURRENT_USER/Software/Reality Pump/TwoWorlds/Graphics: Code: Name | Type | Data --------------------------------|------------|------ CommonGraphicsOptions | REG_BINARY | 00 00 00 00 65 3B 7F 3F 02 00 00 00 00 00 00 00 0A 00 00 00 00 00 80 3F 00 00 80 3F 04 00 00 00 01 00 00 00 01 00 00 00 01 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 DSettings | REG_DWORD | 2 EnableMultisampleInWindowedMode | REG_DWORD | 0 ForceCameraAspectX | REG_DWORD | 0 ForceCameraAspectY | REG_DWORD | 0 FullScreen | REG_DWORD | 1 HDRMode | REG_DWORD | 10 Height | REG_DWORD | 768 HighQualityShadows | REG_DWORD | 0 MultisampleType | REG_DWORD | 0 Shadows | REG_DWORD | 1 Width | REG_DWORD | 1366 Though the backbuffer might not be the problem it seems (unless it is only a problem in the open source radeon driver), I have posted the output of the fglrx driver below, which starts although it gives the same backbuffer fixme. The wine output with fglrx: (I started the game and exited.) wine CoDMP.exe: Code: richard@debian:~/.wine/drive_c/Program Files/Call of Duty$ wine CoDMP.exe err:wgl:get_render_type_from_fbconfig Unknown render_type: 0 err:wgl:get_render_type_from_fbconfig Unknown render_type: 0 fixme:win:EnumDisplayDevicesW ((null),0,0x21cf748,0x00000000), stub! err:wgl:X11DRV_wglGetPixelFormatAttribivARB unexpected RenderType(8) err:wgl:X11DRV_wglGetPixelFormatAttribivARB unexpected RenderType(8) fixme:keyboard:RegisterHotKey ((nil),0,0x00000001,9): stub This sound card's driver does not support direct access The (slower) DirectSound HEL mode will be used instead. This sound card's driver does not support direct access The (slower) DirectSound HEL mode will be used instead. This sound card's driver does not support direct access The (slower) DirectSound HEL mode will be used instead. fixme:keyboard:UnregisterHotKey ((nil),0): stub wine TwoWorlds.exe: http://pastebin.com/PvhbrEB9 Both games work, as stated before, though Two Worlds has graphical "glitches" with fglrx (which makes it unplayable).