OpenArena is NOT associated with id Software, Bethesda Softworks, Zenimax Media or the Quake trademark.
Although many OA players may have an history as Quake 3 players, it is not necessary to have played Quake series in order to enjoy OpenArena.
Q3A is Quake III Arena in short. OpenArena is a free game derivated from Quake 3 Arena. You don't need Q3A to play OpenArena. Many maps and mods created for Q3A work also in OpenArena.
For more info, please read:
- /Quake III Arena (Main game, Q3A or Q3 for short)
- /Team Arena (Official mod, TA or Q3TA for short)
- /PointRelease (Q3A patch)
- /ioquake3 (Derivated game engine, ioq3 for short)
- /Quake III Revolution (PlayStation 2 port, Q3R for short)