Fortress style games typically involve capture the flag game modes and others but are distinct in that they have various player classes each with distinct abilities and weaknesses. To be successful a team must have a mixture of classes and all work together to assault the enemy base and defend the fort. Q3F (now Q3F2) is a great add-on mod for Quake3 that works just dandy with Linux Quake3. This mod has all the physics of the original QuakeWorld mod that made Valve famous (before TFC) and some seriously enhanced features like a remote video display for sentry guns and just beautiful graphics. Classic old maps like 2Forts are all there with the wild and crazy gameplay like you would expect from a Fortress variant. Greatly improved recently, I now rate this a solid 5-stars. Totally recommended for Fortress fans!

License: free

Additional System Requirements: Requires latest patched version of Quake3 and OpenGL capable system.