Special abilities and actions are controlled by the Force Gauge, an energy meter which determines how long special skills can be active. Once drained, the skill cannot be activated until the meter refills, which it does during battles. Four skills can be equipped for each character. After battles, characters earn Enhancement Points (EP), which can be used to strengthen equipped armor, weapons and accessories, instead of using Gald (the in-game currency) as with previous "Tales" titles. EP can be transferred between weapons. An optional battle arena was added in the PSP version of the game with both single-player and multiplayer matches: in both modes, players need to defeat an enemy team (either AI-controlled enemies or an opposing team) within a time limit.