I have tried everything but nothing to do with OVERSEER. The game install and run well until I arrive in Tex office. Then , if I move or I look an object, the game freeze and I cannot do anything . I'm on windows 8 and have no idea what to do.

I have no problem at all for under a killing moon or Pandora directive.

Go to advance settings in the game and set the video to software mode : )

wow! thx , I had the exact same problem :)

Running the game in Windows 95 compatibility mode may help too.