Singularity

Raven Software's newest first-person shooter, Singularity, absolutely overflows with that sort of atmospheric junk. And that's just one of the many, many ways Raven's game gives off a serious BioShock vibe. For starters, Singularity opens with a helicopter crash over the Pacific Ocean -- BioShock, a plane crash in the Atlantic. Both games drop their silent protagonists into strange and perilous ruined cities where mysterious, flesh-mutating substances have been unearthed. They also both allow you to collect and trade the aforementioned gene-altering materials to customize and upgrade your abilities. I could go on for days, honestly, but all that's really missing here are guys in retro-looking diving suits, a soundtrack loaded with Bing Crosby songs, and the ability to unleash swarms of bees from your hands.