he gameplay of Pandora Tomorrow is largely unchanged from the original Splinter Cell. The game features some moderate graphical improvements, as well as minor gameplay changes such as the fact that health kits are no longer an inventory item, and the addition of a laser sight to Sam's pistol that allows the player to know exactly where the rounds will strike, even when moving around. Also, Sam can now whistle to attract enemies, open doors while carrying a body, shoot while hanging upside down, perform a "SWAT turn" to go past doorways unnoticed (move from one side of the door to other while covered), and perform a half split jump. In Chaos Theory, the next entry in the series, the SWAT turn was removed and the pistol laser was replaced with an OCP (Optically Channeled Potentiator) which can temporarily disable electronic devices. The PlayStation 2 and GameCube versions of Pandora Tomorrow also feature an additional single-player mission to compensate for the abridged gameplay compared to the PC and Xbox versions.