Austrian developer Broken Rules has launched an Indiegogo campaign for their latest title, Secrets of Rætikon. Described as an aerial exploration game set in the Alps, you play as a mythical tribe of bird people set against a backstory of nature versus civilization. The game is set for release on PC and Mac with a Linux version also in the works. Any backers will receive an Alpha version of the game, as well as a Steam key for the final release when complete. Check out the Indiegogo page for lots of more info about the game.