Delgado: Ok, i just installed the game, and i do not have any issues with starting it (Win 8 Pro x64). What you can try:
Installing the game by rightclick on the"setup_outcast.exe" and chose "as Admin", and so start the installation (so did I).
Which driver for yout 8800GT do you use? For Win 8 it should be version 310.70
EDIT: i installed only the game, without any patches or mods.
Speaking of Nvidia drivers, they're up to 310.90 now, at least for Windows 7 and I am not 100% sure about Windows 8. The new drivers were released on January 5th. Please try installing the newer drivers and see if that helps. Also, please write to our Support department about any issues with Outcast and we'll help you out :D.
