Pixel Dungeons is a super fun Co-op Dungeon Crawler RPG made by Yohan Games. Invite 2-4 of your friends and play multiplayer! You can find over 15 weapons and 10 monsters! (in the beta). This game will have weekly updates! This game is currently on: Beta 1.1: Linux Feature will be added as soon as possible!
Awesome game, have not got it yet though. Hope i do befor the sale goes away :D