Classic Marathon

Classic Marathon is the fan-maintained revival of Bungie's foundational 1994 Mac-exclusive FPS, brought to modern hardware by the same community that built the Aleph One engine. The premise is the same one that influenced an entire genre — alien forces have boarded the colony ship UESC Marathon in the Tau Ceti system, in orbit around humanity's first interstellar colony, and as a security officer assigned to the ship, your duty is to defend it and its crew from the threat.

The game's historical significance is hard to overstate. Marathon predates Halo by years and shares much of its DNA — Bungie's distinctive approach to environmental storytelling, dual-wielding weapons, multiple firing modes, and lore-rich worldbuilding all started here, before being refined across the franchise. The 1994 design holds up remarkably well as a piece of FPS history, with the maze-like Mac aesthetic giving the game a distinct identity even compared to its DOS contemporaries.

This release uses the original game data files for authentic play, with optional modern features layered on top for players who want them. Widescreen HUD support, 3D filtering and perspective, positional audio, and 60+ fps interpolation can all be toggled — in case the original is too authentic. Classic Marathon is powered by the Aleph One engine, available under GPL Version 3, which means the entire project is open-source and community-maintained for as long as players want to keep it running.