Hapa Games has released Ascendant on Mac OS X (10.5 and higher), Windows, and Linux platforms. It's available at Steam (http://tinyurl.com/orvyx8n) for US$9.99.
Here's how the game is described: "Ascendanat is a hard side-scrolling brawler! Created with a passion for beautiful art styles and fluid engaging mechanics, the game introduces players to a brand new world each time they play. Using modern rogue like elements such as permadeath and procedurally generated environments, you play the role of a demigod who invades a plane controlled by your rivals. They will stop at nothing to eliminate you, and only the best of warriors will triumph over their armies of zealots and beasts."| Read more »