the Final Fantasy series. The game's turn-based combat system is similar to Final Fantasy Xs "Conditional Turn-Based" system (CTB), which replaced the "Active Time Battle" system (ATB) used from Final Fantasy IV to Final Fantasy IX. The primary difference between the ATB and the CTB is that in the CTB system, time pauses as the player selects commands, whereas in the ATB system, time continues to pass. As such, in the ATB system, even when the player is selecting actions, the enemy can continue to attack. In the CTB system, however, the enemy will not attack the player until the player has had their turn. During battle, a "battle queue" is displayed on-screen. This shows the order in which the player's party and the enemy will take their turns. However, the order of battle can be changed by using abilities to slow down or stun the enemy, or speed up the player characters. Likewise, the enemies can increase their own speed and decrease the party's, again changing the order. The queue changes each time a turn is completed. The player can only have three active party members in any given battle, but in most battles, they are free to switch party members in and out of combat. Occasionally, the player will be joined by a fourth member, who is usually a character from the films, and is controllable for one or two battles only. Battles are structured around the player selecting actions from the battle menu. Actions include options such as "Attack", "Change Weapon", "Item" and "Skip." Another feature of battling is "Perfect Mode." As the player successfully executes attacks on the enemy, their momentum meter will fill. When it is completely full, any member of the party can select "Perfect Mode" from the menu and execute a more powerful attack. Perfect attacks are general to the party, with any character able to execute any attack; they are not specific to each character. At the end of each battle, each member of the party receives experience points, based upon their actions during the battle. For example, if one character killed all the enemies, they will get more points than the others. If a character did not participate in the battle at all, they will get less points than those who did. Gaining experience points leads to the characters leveling up. When a character levels up, they receive attribute points, which