Marathon 2: Durandal
Marathon 2: Durandal (Mac, 1995) has an official source code release, Aleph-One-Marathon/alephone, and 1 other public project, including a source port.
Data checked 2026-10-13 · unbaked registry
Projects
Aleph One is the open source continuation of Bungie’s Marathon 2 game engine.
In PortMaster (main) as 'Aleph-One Marathon 2' (alephone-marathon2), updated 2024-12-16; ready-to-run
Marathon 2: Durandal (1995) by Bungie Software Products Corporation
Wikipedia: open-source code, freeware data; source released 2000 by/for Bungie. Bungie released source GPL 2000; data freeware 2005/2011. Released by Bungie on January 17, 2000.
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What you need
Free game data is included with at least one project.
Same toolchain
More on Mac
Found via PortsMaster/PortMaster-New/tree/main/ports/aleph, PortsMaster/PortMaster-Info/blob/main/ports.json, en.wikipedia.org/wiki/List_of_commercial_video_g, mactech.com/content/marathon-2-source-code-relea
GitHub data checked 2026-10-13. Notes are summaries from the research pass; the project pages are the authority.