Star Wars Dark Forces, Jedi Knight Jedi Outcast, Jedi Knight Jedi Academy, Clive Barker's Undying, American McGee's Alice, Captain Claw, Return to Castle Wolfenstein, Unreal Tournament 99, 2004, Quake 1-3, Half Life 1, Half Life 2 possibly, Max Payne 1 and 2, Soldier of Fortune 1 and 2 and all the old school retro pc games that you can run on DosBox, etc. You can probably also run snes, gba, n64 and psx emulators