Bungie's original first-person, the Marathon trilogy, is available for free on iOS.

The three games, Marathon, Marathon 2: Durandal, and Marathon Infinity, were ported with Bungie's blessing by programmer Daniel Blezek. The first two games were made available earlier this year, but Infinity didn't appear on the app store until last Tuesday.

It seems appropriate that the games are on iOS, considering that the games were originally Mac exclusives.

[via TouchArcade]