Paranautical Activity combines the classic FPS action of games like Doom and Quake, with the randomness and difficulty of modern roguelikes like Binding of Isaac and Spelunky. It's available now on Desura for $9.99. Buying the beta get's you all future updates for the game, as well as the full game when it comes out. Visit our webstite at CodeAvarice.com to stay up to date on upcoming patches, and the latest developments.
Fun game. Get's too easy if you get the right power ups at the right time.