| Colour | Meaning |
|---|---|
| Red | Old release; not supported |
| Green | Current release |
| Blue | Future release |
| Major Version | Minor Version | Release date | Notes |
|---|---|---|---|
| Alpha | Alpha 1 | 2005-08-19 | Initial release. SVN Revision: N/A |
| Alpha 2 | 2005-11-18 | Second alpha release SVN Revision: N/A | |
| Alpha 3 | 2006-02-25 | Deathmatch testing (First version with working netcode tested, and first announcer) SVN Revision: N/A | |
| Alpha 4 | 2006-05-07 | Fourth alpha release (CTF play) SVN Revision: N/A | |
| 0.4 | 0.4.1 | 2006-06-06 | ?? SVN Revision: N/A |
| 0.5 | 0.5.0 | 2006-08-20 | (First version using ioquake3, and flares) SVN Revision: 37 |
| 0.5.1 | 2006-08-26 | Non-Free audio removed SVN Revision: 42 | |
| 0.6 | 0.6.0 | 2006-12-02 | (First version with bots) SVN Revision: 141 |
| 0.7 | 0.7.0 | 2007-07-07 | Media polishing and additions, new maps and player models SVN Revision: 548 |
| 0.7.1 | 2007-08-08 | Fan map fixed, new rocket trail SVN Revision: 609 | |
| 0.7.6 | 2008-04-21 | Several new gameplay modes added, instant gib, unlagged, rockets only, music removed, few new models SVN Revision: 821 | |
| 0.7.7 | 2008-05-29 | Bug fix release; server list no longer lists pre-0.7.7 servers, eliminating version incompatibilities. SVN Revision: 827 | |
| 0.8 | 0.8.0 | 2008-08-08 | New voices, some weapon remodelling, vertex lighting removal, mission pack. The release was pulled from the servers due to an artist using non-GPL compliant work. SVN Revision: 887 |
| 0.8.1 | 2008-10-31 | Campaign reorganized, new maps, non-GPL compliant content removed. SVN Revision: 901 | |
| 0.8.5 | 2010-03-23 | Seven new maps, added the remaining stuff from the Missionpack into main OA, new physics choices (framerate dependant/125hz emulated/91hz emulated/accurate), new menu, and a lot of extra stuff. SVN Revision: 925 | |
| 0.8.8 | 2012-02-14 | Fourteen new maps, new model: Neko, SP reorganized, Invulnerability fully modelled and working, some bugs fixed and a lot of extra stuff, including compatibility for third-party bots designed for Q3A and new dmflags. SVN Revision: 947 | |
| 3.0 | 3.0.0* | TBA | OA3: Planned reboot. |