Battery life is heavily dependent on the game chosen; games such as Lumines are expected to greatly extend the battery life of the system, with graphically advanced games (or games that frequently access the UMD drive) such as Ridge Racers providing shorter battery life. Sony Corporation COO, Ken Kutaragi, has compared the system to the Walkman, in that battery life will be improved with each product revision, and has outlined some steps (switching to a different fabrication process, for example) which will be used to improve the system's endurance. Currently the PSP's CPU is fabricated using a 90-nm process, but Sony has 65-nm and 45-nm technology available.

Final Fantasy borrowed many gameplay elements from its primary rival, the Dragon Quest franchise. As such, Final Fantasy uses a menu-driven, turn-based battle system. Most games in the series utilize a experience level system for character advancement (although Final Fantasy II did not), and a point-based system for casting magical spells (though Final Fantasy I, Final Fantasy III and Final Fantasy VIII all featured different approaches). Most games in the series (post-Final Fantasy III) feature a variety of special commands, over and beyond the traditional Attack, Defend, Cast Magic, and Run battle commands, such as the ability to steal items from enemies, or perfoming a leap attack.


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