Marathon

Marathon is a video game series developed by Bungie. It is a first-person shooter, with a deep lore and massive universe. It is the spiritual predecessor to the Halo franchise, and takes place in the same universe as Bungie's earlier game, Pathways Into Darkness.

Games
There are three games in the Marathon series:
 * Marathon
 * Marathon 2: Durandal
 * Marathon Infinity

List of references to Marathon in the Destiny series

 * Tycho is a location in Destiny. An AI in Marathon is named likewise.
 * The Fate of All Fools gets its name from the phrase, "the just fate of fools," which the AI Durandal carves into a planet's surface in Latin after destroying Tycho.
 * The Duke MK.44 bears resemblance to the .44 Magnum.
 * Fusion rifles operate on a similar principle to the Zeus fusion pistol.