Tabletop Simulator is the kind of game where you flip the table, turn off gravity, then win a game of chess. It's hard to learn at first, but it's fun.

Organ Trail is a game about shooting your friend in the head after he gets bitten by a zombie and knocks himself out by slamming his head into your car.

Luftrausers is an nice bullet hell with amazing controls and a modular plane system that allows you to build laser nukes that fly and go underwater.

Amazing Game. It is well rounded for the most part, but it is lacking in the "variety" department.(*Disclaimer*: Referring to the "preview" version)

FTL is a masterpiece. In fact, stop reading and buy it. Ok, now, continue. FTL's randomized levels and rouge-like mechanics make it irresitable.

Awesomenauts is a 2-D platformer/MOBA. I oddly feel that this better than the standard top-down view MOBAs. It works better as it has better controls.

Game Dev Tycoon is on of those games that makes me love the indie gaming market more. It's amazing at what it does with accurate simulations and dates.

Spelunky's rouge-like death mechanics go along hand-in-hand with the off-the-wall (literally) deaths and its characters all compliment that, too.

KSP is a game about building things built not to explode... that eventually will anyway. Its ridicoulus Kerbals make the journey to death even more fun.

Space Engineers is awesomely fun. The mechanics are very balanced for an early stage. It has great potenital and I hope to see it develop in the future.