Altitude0, an aerial racing game, was originally revealed back in early 2012. Today the game launches on Steam Early Access, and there's already plenty to enjoy in this Early Access package.

I've always been terrible at flying planes in games, and my experience with Altitude0 is no different. You fly short courses against the ghosts of online players, in a bid to unlock better licenses and more tracks. It's pretty difficult, and takes a whole lot of practice to get it right. You can find the game on Steam.