Bungie and Aleph One have re-released the third entry of the studio's classic Marathon series for the first time in 28 years, Marathon Infinity, and it is available on Steam for absolutely free. While Bungie is mainly known for being the creator of the Halo and Destiny franchises, the studio got its start with Marathon. Bungie's FPS trilogy started in 1994, with the first game being released for Apple Macintosh computers, competing alongside the likes of Doom and Wolfenstein.