Robocraft is a surprisingly fun free 2 play game now on Linux. You build your own vehicle and have it out with other people across the globe with some amusing designs.
Depression is no laughing matter, and in Depression Quest you play the role of a character suffering from depression. An interesting game that's for sure.
OpenRA is the excellent open source engine to allow you to play with the units & buildings from the Red Alert and Command & Conquer series of games. They have released their July engine version with some awesome additions.
Only If is a surreal first person adventure-puzzle game. You play as Anthony Clyde, who, after a heavy night of partying, wakes up to find himself in an unfamiliar bed with no memory of the previous night's events.
A fantastic looking and free visual novel with strategy elements is now on Steam for Linux and it's good. I give it a quick look and tell you what I think.
OpenRA is a really great project for people who remember games like Command & Conquer, Red Alert, Tiberian Sun & Dune 2000 as this engine uses the units and building from those games using the legally released free downloads for them in a much more up to date engine.
Floating Point is a free, peaceful game about using a grappling hook to swing yourself gracefully through randomly generated spaces. In the air, you're fighting gravity. When you splash down beneath the water, you're fighting your own buoyancy to swing yourself further into the depths.
KeeperRL is the up-and-coming open source dungeon sim that recently hit their funding goal on indiegogo to expand. They have also just release a big alpha update to the free and open source game.
8BitMMO is a retro-style 2D massively multiplayer game! It's a giant construction sandbox -- you can build a home or a castle in a persistent streaming world. Found and manage your own city. Fight evil LawyerCats and engage in Player vs Player battle.
Good news open source gaming fans, KeeperRL has officially hit 100% on indiegogo which will hopefully give the developer plenty of room to improve the project.
Today marks the day that Toribash is officially on Steam for Linux. If you remember we actually had the developers give away 15 copies of the game right here in March as well to help test it.