Kill Fun Yeah is an online 2D platform shooter. Murder and capture your way to the top, using an ever increasing arsenal of silly weaponry and items, the powers of deflect, attract and freeze, as well as various powerups. Make your own maps, using custom made tilesets and background sprites and create your own custom player skin to make you stand out on the battlefield. The game is free to try for 3 hours with a few limitations, which, along with the time limit, are removed upon purchasing the full version.
Kill Fun Yeah Alpha 0.33 has been released. Mac OS X release!
Posted by JLar on Sep 2nd, 2012

Some of what is new in this release:
Please note that the OS X version is still very untested and you definitely should try it out before considering buying the game (of course this advice applies to the Windows version as well), in order to make sure that it runs acceptable on your machine.
Also, because of some issues with transfer of executable files, the OS X version does not come with the KFY Patcher at this time.
While seemingly more mild compared to on Windows, there are issues with the Intel GPUs on OS X too, so if you have one of those (get a GeForce or Radeon one already! :)) you will probably run into some issues with the graphics.