#30 - Bioshock
Bioshock is scary, tense and engrossing. Discovering the world of Rapture is one fascinating tale. Full of twisted characters and demented/brutal enemies, this is different kind of FPS (the good kind). The game has a heavy focus on exploration, does a superb job of setting the atmosphere, delivers quite a few shocking revelations and proved I'm a horrible person since I harvested each and everyone of the Little Sisters.
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