Die by the Swor is a computer swordfighting game developed by Treyarch, and published by Tantrum Entertainment (a sub-brand of Interplay Productions) on February 28, 1998. The title's main selling point was the introduction of the VSIM control system, which allowed players to independently command the movement and swordfighting of their ingame avatars; running, jumping, and turning with one hand, while simultaneously slashing, stabbing, and parrying with the other. While many games of this type allow for a similar dualism, Die by the Sword remains to this day unique in its treatment of physically correct and force based melee combat, as described below.