A slow, tense stealth game with a rich atmosphere and nearly enough depth to pass as a simulation. Its story and missions are great, too.

If you can get a server up, and amass enough people, this is a unique party game of deception, murder and hilarity set on well-designed believable maps.

A dark, atmospheric horror game with well developed (albeit MARGINALLY clunky) combat, resource management, and RPG elements. The story is great, too.

Arguably the first proper 3d action adventure game. Despite having weak-ish combat and some irritating levels, the atmosphere and locations are sick.

A short, experimental climbing game where you grow a huge plant from sea level to the atmosphere's edge, harvesting energy from distant floating islands