Realtech VR has released No Gravity 1.0 (http://www.nogravitythegame.com/mac/), a game originally released as a PSP game that’s now on the Mac. It costs US$3.99, requires Mac OS X 10.6 or higher and is available worldwide exclusively through the Mac App Store in the Games category.
The game pits the player against evil forces who have unleashed a mind-altering sickness across thousands of colonies. To help in the fight, each ship comes equipped with six weapons, everything from lasers to ion blasters.
Players have 31 mission levels to play, can choose from six different spaceships and two levels of difficulty. No Gravity requires OpenGL 2.0 or better.