In games which use hit points, a character has a certain number of hit points when she is at full health as determined by various game-specific factors such as class and level. This total is reduced as the character sustains damage in battle. When the character's hit points are reduced to zero, the consequences vary. In some games, this represents character death. In others, it means merely being knocked out. Some games have a negative hit points buffer that represent a character's ability to survive such incapacitating wounds, provided medical attention can be obtained.