Downloading AlephOne 1.1 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The most popular versions of the software are 1.1, 1.0 and 0.1. You can execute this free app on Mac OS X 10.4.0 or later.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The bundle identifier for AlephOne for Mac is org.bungie.source.AlephOne. The actual developer of this free Mac application is Christian Bauer. The software lies within Games, more precisely Action.
From the developer:
Aleph One is an Open Source 3D first-person shooter game, based on the game Marathon 2 by Bungie Software. Aleph One supports Marathon 2 and Marathon Infinity natively, and Marathon through a conversion called M1A1 and 3rd-party content on a wide array of platforms, with (optional) OpenGL rendering, Internet play, Lua scripting, and more.. Many third party scenarios and net maps are also available.
You may want to check out more Mac applications, such as LEGO Batman, Wolfenstein ET or Open Arena, which might be similar to AlephOne.