Quake III: Arena

Notes:

bug (with Graeme hints), bug fixes, command tweaks, map making changes, added auto-update system, new maps (pro-q3dm6, pro-q3dm13, pro-q3tourney2 and pro-q3tourney4), new compression in network code, new anti-cheat measures, new toggleable weapon effects (railgun, rocket launcher, plasma gun, lightning gun), other changes