Aleph One (formerly known as the Marathon Open Source Project) is a free and open-source first-person shooter engine based on the source code of Bungie Studios' Marathon 2: Durandal. The project commenced in early 2000, when Bungie released the code shortly before being acquired by Microsoft and spurred the fan community to further develop it. Since that time, Aleph One has become a successful project in terms of development and community support. Most modern-day and die-hard Marathon enthusiasts use Aleph One due to its enhancements over the original games and the fact that it is playable with today's platforms. Its name is taken from the second infinite cardinal number in transfinite arithmetic and references Marathon Infinity, the final game in the Marathon Trilogy.

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Marathon

Marathon

26 ratings First Person Shooter

You are a security guard who accompanied a group of space colonists on their trip on the huge space ship, the Marathon. Suddenly, aliens who call themselves...

90%
Marathon 2: Durandal

Marathon 2: Durandal

19 ratings First Person Shooter

Marathon 2: Durandal was the first sequel in the Marathon series of science fiction first-person shooter computer games from Bungie Software. It was released...

87%
Marathon Infinity

Marathon Infinity

1 rating First Person Shooter

The third title of the three games collectively known as the Marathon Trilogy, you reprise your role as a security officer, you must rewrite time to stop...

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