 The US version of "Metamorphic Force" uses a numeric lifepoint counter that doubles as the timer, going down by one lifepoint each tick (much like in ‘’Gauntlet’’), while the Japanese version uses a traditional health bar.The Fifth Stage in the US version consists of a boss rush where the player fights the previous bosses in pairs before facing the level's own boss, while in the Japanese version the player fights that level boss only.In addition, some sprites have been completely altered, such as the stained glass artwork seen during the elevator scene in the Final Stage.