A growing collection of computer games that are freeware, open source or free to play.

BZFlag is a 3D multi-player tank battle game that allows users to play against each other in a networked environment. There are five teams: red, green, blue, purple and rogue (rogue tanks are black). Destroying a player on another team scores a win, while being destroyed or destroying a teammate scores a loss. Rogues have no teammates (not even other rogues), so they cannot shoot teammates and they do not have a team score.

There are three main styles of play: capture-the-flag, free-for-all, and rabbit-hunt. In capture-the-flag, each team (except rogues) has a team base and each team with at least one player has a team flag. The object is to capture an enemy team’s flag by bringing it to your team’s base. This destroys every player on the captured team, subtracts one from that team’s score, and adds one to your team’s score. In free-for-all, there are no team flags or team bases. The object is simply to get as high a score as possible. In rabbit-hunt, the lead player is chosen as the target for all other players. When the rabbit (target) is destroyed, the live player with the next highest score becomes the rabbit. The object is to remain the rabbit for as long as possible. The rabbit is marked as a white tank.