BZFlag is a free online multiplayer cross-platform open source 3D tank battle game. The name originates from “Battle Zone capture the Flag”. It runs on Irix, Linux, *BSD, Windows, Mac OS X, and many other platforms. It's one of the most popular games ever on Silicon Graphics machines and continues to be developed and improved to this day. It's one of the most popular open source games ever.

Homepage

Category: Action/Mech

License: Open Source

Hardware Requirement: GFX

Singleplayer: No
Multiplayer: Yes
Demo: Free

Installation Guide: None
Ubuntu Package: Synaptic Package Manager