Steam News announces the release of SUPER DISTRO, a 2D platformer that's carrying a 15% launch discount. This is only for Windows for now, though the headline of this announcement references OS X and Linux versions, though they are not mentioned in the article itself., which discusses future support, saying bug fixes will come next week along with a free map. Here's word on the game:

"SUPER DISTRO" is a hard-as-nails (Seriously, Who comes up with these idioms?) 2D platformer in the style of retro games such as Megaman, Super Mario Bros 2: The Lost Levels and other such rage-inducing classics. Taking "Difficult gameplay" to a whole new level - SUPER DISTRO is not for the faint-of-heart. You will die again and again. The weak need not apply - Only those who are determined to overcome impossible odds will find victory here and those are the rules of the land in SUPER DISTRO.