I bought E.Y.E.: Divine Cybermancy.
After finishing the first level, my first thought was that it had been a waste of money, but after playing it for a few hours I'm starting to enjoy it.
Basically, it's a game that tries to combine several games in once. The gameplay is an mixture of Deus Ex and System Shock's RPG elements, Counter Strike's shooting gameplay, and Borderland's 4-player co-op thrown in for good measure.
The setting is an amalgamation of Warhammer 40k, Deus Ex, Dead Space, and Chinese + Roman ancient history.
The translation is off at times, the graphics are nothing to write home about, couldn't make sense of the plot most of the time, and the re-spawning enemies get boring when playing in single player. But for all it's faults, it is a solid and fun FPS and for only $18 dollars it will give a lot of bang for your buck.