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Aleph One is a free, open-source continuation of Bungie’s Marathon 2 game engine that lets players run the Marathon trilogy and community-made scenarios on modern macOS, Windows, and Linux computers. It is an engine, not a standalone campaign: to play, install Aleph One and provide the data files for a game or scenario.
What Aleph One continues—and what it does not
The Aleph One project describes its software as a continuation of Bungie’s Marathon 2 engine; its source repository also calls it a continuation of the Marathon Infinity engine. “Continuation” means a community-maintained, open-source project that extends the engine for modern computers and new content. It does not mean Bungie currently develops Aleph One. The project publishes the engine under the GNU General Public License, version 3.
The distinction between engine and game content matters: Aleph One supplies the software that runs a scenario, while the scenario supplies its levels, story, and other game data. The project provides downloads for the original trilogy as well as a catalogue of community scenarios.
What you need to play
- Aleph One: the engine application for your desktop operating system.
- Scenario data: files for Marathon, Marathon 2, Marathon Infinity, or another compatible scenario.
- A supported desktop platform: the official download page lists macOS, Windows, and Linux Flatpak instructions.
The official download page displays Aleph One version 1.11, released August 29, 2025. That is the version and date shown on the project page; it should not be read as proof that no newer build exists. See the Aleph One downloads and platform instructions.
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- CLASSIC GRAPHICS AND SOUNDS: Immerse yourself in nostalgia with classic graphics, music, and sounds that look just like the original Tetris arcade game!
- AUTHENTIC GAMEPLAY: Use the joystick and buttons to move and rotate the Tetriminos as they fall to complete lines and score points!
- FULL COLOR SCREEN: With a brighter, full color screen that makes it easy to see the blocks, you’ll be racking up points like a pro as you stack your Tetriminos!
- MARATHON MODE: Race to line up your Tetriminos in rows before they stack too high. Complete 10 lines to move to the next level. But watch out - the Tetriminos drop faster the longer you play!
- SHARE AND COLLECT: Arcade Classics are a must-have retro toy for collectors or for anyone looking to share this classic toy with the next generation!
Install the engine and launch a scenario
The project’s ordinary-player instructions use the scenario folder to bring the engine and the selected game data together. The exact steps vary by platform:
macOS
- Download the macOS Aleph One application and the scenario data you want to play.
- Place Aleph One in the scenario folder, following the project’s download instructions.
- Launch the application from that folder.
Windows
- Download Aleph One and the scenario data.
- Put
Aleph One.exein the scenario folder. - Launch the executable.
Linux with Flatpak
- Install Aleph One using the Flatpak instructions on the official download page.
- Download and unpack the scenario data.
- Launch the engine with that scenario directory, using the project’s instructions.
Compiling from source is a separate path for developers, not a prerequisite for playing. The repository’s build notes cover platform-specific toolchains and libraries; consult them only if you intend to build the engine yourself.
Rank #2
- Four-player madness! - you can't spell Nippon marathon without 'P', 'a', 'R', 'T' And *checks letters* 'I', we suppose... Solo play is supported, but grab up to four pads and enjoy the supreme Silliness of gaming's greatest marathon.
- see all of Japan! - Cross the entirety of the land of Nippon in a series of creative courses spanning busy city streets, village lanes, bustling markets & More! Wacky characters! - Go toe-to-toe with some of the coolest contestants who ever did, player... Contest! Lobster-man J Darwin, onesie-obsessive Elizabeth nishibori, school uniform fan zenbei "xen bae" And the completely normal snuguru Maestro
- epic pratfalls! - swinging poles! Giant face-slapping fish! Cyclists! Shiba Inu! Panes of glass! Traffic! False doors! Barrels! Rolling Beams! Wobbly planks! Flying fruit! More Shiba Inu! Earthquakes!!!!!
- tons of surprises! - you never know what will happen next in Nippon marathon. Perhaps you'll find time for an impromptu spot of slot machine fun Maybe a news anchor will Jet Pack in to Interview you on the racetrack Heck, anything is possible...
- drop-in/drop-out play! - random pedestrian passing by your couch and wants to play Not a problem. Whatever the cause, Hop in and out for the ultimate, flexible party get-together!
Choosing a Marathon campaign
The original trilogy is a natural place to start. The right choice depends on whether you want a particular campaign, refreshed visuals, cooperative play, or compatibility with community maps.
| Scenario | What the project highlights | Why choose it |
|---|---|---|
| Marathon | The original game in the trilogy, available as scenario data for Aleph One. The cited project pages do not state a level count here. | Choose it to begin with the series’ first campaign. |
| Marathon 2: Durandal | The release includes classic graphics alongside refreshed high-definition textures and monsters, according to the Aleph One project. | A good fit if you specifically want the game named in Aleph One’s engine lineage. |
| Marathon Infinity | The project describes “Blood Tides of Lh’owon” as a 20-level solo/co-op campaign and says it works with hundreds of community-made maps. It is also the project’s usual choice for online matches. | Choose it for solo or cooperative campaign play, broad map compatibility, or the project’s common online-play option. |
The level and map figures above are descriptions published by the Aleph One project, not independent audits. Find the trilogy’s scenario downloads and details through the official download page.
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Find more scenarios in the community catalogue
The official catalogue lists total conversions and other scenarios, including Trojan, EVIL, Tempus Irae Redux, RED, Eternal, Rubicon X, Phoenix, Yuge, Apotheosis X, and Istoria. The project describes Trojan as 25 levels, Eternal as 52 levels, and Phoenix as a 35-level single-player conversion. These are project-published descriptions, not independently verified counts.
Use the Aleph One scenario catalogue to discover options, then check each scenario’s own information before choosing it. A listing is not a guarantee that every scenario is equally maintained or compatible with every engine release.
Rank #4
- Four-player madness! - You can't spell Nippon Marathon without 'P', 'A', 'R', 'T' and *checks letters* 'I', we suppose… Solo play is supported, but grab up to four pads and enjoy the supreme silliness of gaming's greatest marathon.
- See all of Japan! - Cross the entirety of the land of Nippon in a series of creative courses spanning busy city streets, village lanes, bustling markets & more!
- Wacky characters! - Go toe-to-toe with some of the coolest contestants who ever did, er… contest! Lobster-man J DARWIN, onesie-obsessive Elizabeth Nishibori, school uniform fan Zenbei "Xen Bae" and the completely normal Snuguru Maestro Epic pratfalls! - Swinging poles! Giant face-slapping fish! Cyclists! Shiba Inu! Panes of glass! Traffic! False doors! Barrels! Rolling beams! Wobbly planks! Flying fruit! More Shiba Inu! EARTHQUAKES!!!!!
- Tons of surprises! - You never know what will happen next in Nippon Marathon. Perhaps you'll find time for an impromptu spot of slot machine fun? Maybe a news anchor will jetpack in to interview you on the racetrack? Heck, anything is possible…
- Drop-in/drop-out play! - Random pedestrian passing by your couch and wants to play? Not a problem. Whatever the cause, hop in and out for the ultimate, flexible party get-together!
How multiplayer works
The project describes multiplayer as peer-to-peer, supporting up to eight players. Local-area-network play is supported; playing over the Internet depends on the host being configured properly. The official site points players to a global matchmaking lobby and identifies Marathon Infinity as the usual choice for online matches. These are the project’s descriptions, not results from an independent test. Start with the official project site for multiplayer information.
Do you need old hardware or a physical copy?
No physical product is identified as necessary by the project’s current download route: it provides downloadable engine binaries, trilogy scenario files, and community content. The archived Marathon Infinity manual describes requirements for the original Macintosh release—among them a 68040-or-better processor, a 13-inch 256-color monitor, System 7 or later, and about 6 MB of available RAM. Those are historical requirements for that original game, not modern Aleph One hardware recommendations.
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