Aerobat is coming to PC via Steam, and possibly to Mac and Linux at a later time, although there is no announced release date for the game as yet.
To find more promising 2D games currently under development, be sure to check out our Master List.
A game that places you in the role of a princess-kidnapping villain, from StarBlade
An acrobatic shooter starring the purple-haired hero of the world, from Bootdisk Revolution
A beat 'em up in the NES-series Double Dragon continuity, from Arc System Works