BZFlag

BZFlag (an abbreviation for Battle Zone capture the Flag) is a free, open source, online multiplayer video game. BZFlag is an Open-source first-person shooter 3D tank based multiplayer online game, similar in concept to Battlezone, it was originally written by Chris Schoeneman (creator of Synergy) for SGI graphics workstations running IRIX, but has now been ported to other operating systems including Microsoft Windows, OS X, Linux, BSD, and Solaris. The source code is available freely from the project's website under the GNU Lesser General Public License.

BZFlag

BZFlag (an abbreviation for Battle Zone capture the Flag) is a free, open source, online multiplayer video game. BZFlag is an Open-source first-person shooter 3D tank based multiplayer online game, similar in concept to Battlezone, it was originally written by Chris Schoeneman (creator of Synergy) for SGI graphics workstations running IRIX, but has now been ported to other operating systems including Microsoft Windows, OS X, Linux, BSD, and Solaris. The source code is available freely from the project's website under the GNU Lesser General Public License.