Marathon, a sci-fi first-person shooter, was created by Bungie as a response to the success of PC game Doom in 1994.
Marathon introduced important features to the FPS genre and quickly became popular among Mac gamers.
Unlike Doom, Marathon offered a slower-paced gameplay with an engaging sci-fi storyline and puzzles.
Marathon's release was a critical and commercial success, establishing Bungie as a major developer for Mac and leading to the development of the Halo franchise.