OpenArena is an open-source content package for ioQuake3 licensed under the GPL, effectively creating a free stand-alone game. Though OpenArena is a free replacement for id Software Inc.’s Quake 3 Arena, it is not compatible with the proprietary game.
OpenArena’s gameplay is exactly the same as Quake III Arena – score frags to win the game using a balanced set of weapons each designed for different situations. Gameplay modes exist such as deathmatch, Team Deathmatch, Tournament, and Capture The Flag (all modes also in the original game). OpenArena version 0.7.6 adds the new Elimination, CTF Elimination, Last Man Standing and Double Domination gametypes.
OpenArena contains Mature Content, such as a lot of blood and guts that stain the level with animation and sound accompanying it, and some characters wear next to nothing (but no nudity).
It uses the ioquake3 game engine, a project which aims to build upon id Software’s Quake 3 source code release.
Features include:
- Different playing modes.
- Bot support.
- Multiplayer with up to 32 players.
- Weapons range from a gauntlet to a BFG10k.
- Invulnerability powerup and effects.
- Great music.
- It doesn’t look like the original game nor does it try to.
Website: openarena.ws
Support: Forums
Developer: OpenArena team
License: GNU General Public License v2.0

OpenArena is written in C. Learn C with our recommended free books and free tutorials.
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