OpenArena is an open-source content package for Quake III Arena licensed under the GPL, effectively creating a free stand-alone game. You do not need Quake III Arena to play this game. OpenArena has bots, network playability, many maps and most of the other features you would expect from a commercial first person shooter. OpenArena requires the OpenAL library found on SlackBuilds.org. It also requires 3D accelerated video drivers but runs quite well on the open-source Intel drivers. Please be advised that the main game zip file, oa080.zip, is about 309MB. Also, the download site listed in the openarena.info file is a direct link, but it is very, very slow. You may wish to visit the openarena homepage (openarena.ws), click on "Files," and look for much faster download sites that do not offer direct links.