Quake Live (or QL for short), formerly known as Quake Zero, is a game by id Software (now published by Bethesda Softworks). It is derived from Quake III Arena, but it is different than OpenArena. It is not under a free license like OpenArena. Quake Live features models and maps from Q3A, plus additional maps and some gametypes which were not included in the original game. Quake Live is maintained directly by Bethseda (now through Steam) and has modified some aspects of the game, like damage and speed of some weapons. Other changes include the shape of hitboxes, which in QL are cylindric.