BIT.TRIP RUNNER
Is the fastest, most exhilarating music/rhythm-platformer to hit Steam! 
Race across the Moon, kicking down crystal walls and sliding under chomping moon-slugs! Bound through the Robotic Mines and face off against the MinerMech! Dash through the Big City on a quest to find friends and defeat the final boss together! 

Gratuitous Space Battles
Who needs backstory? Who needs resource-gathering? Diplomacy is so last year. Gratuitous Space Battles cuts right to the chase of sci-fi strategy games, and deals with large, completely unjustified space battles between huge opposing space fleets. 

Jamestown
Jamestown: Legend Of The Lost Colony is a neo-classical top-down shooter for up to 4 players, set on 17th-century British Colonial Mars. It features all the intensity, depth, and lovingly handcrafted pixels of a classic arcade shooter, with a modern twist: deeply-integrated cooperative gameplay. 

Wizorb
The once peaceful Kingdom of Gorudo is threatened by an evil presence. The only hope for salvation is Cyrus, a wizard versed in a secret magic art called Wizorb! Explore many strange places from the derelict monster infested town of Clover to Gorudo Castle atop Cauldron Peak. Danger lurks around every corner so you'll need to keep your wits about you and have quick reflexes in order to survive.