Download of ioquake3 1.36 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. Ioquake3 1.36.dmg is the default file name to indicate the ioquake3 installer. Ioquake3 for Mac is categorized as Games. The most popular version of the application is 1.3. We recommend checking the downloaded files with any free antivirus. The actual developer of this free software for Mac is Icculus.
From the developer:
This project, ioquake3 (or ioq3 for short,) aims to build upon id Software's Quake 3 source code release. The source code was released on August 20, 2005 under the GPLv2. Since then, we have been cleaning up, fixing bugs, and adding features. The game is free to try, get it from the website
You may want to check out more Mac applications, such as Hospital Hustle, TastyPlanet or AirAssault2Demo, which might be similar to ioquake3.
Utilities