"Kingdom Hearts 3 for all intents and purposes"
This game is the prequel to the original kingdom hearts and stars 3 new keyblade wielders, Terra, Ventus and Aqua, each with their own storyline.
The combat is hands down the best in series, combining the deck aspects of Chain of Memories (which let you create your own abilities and fuse them together to form even more powerful ones) with the Forms and style of Kingdom Hearts 2
The voice acting is all star, the graphics are on par with Kingdom Hearts 2 and the game has a long life span, at least 10 hours for each character, followed by an extra episode and the Mirage arena and 2 secret bosses, and then there's the multitude of sidequests, including Command Board (think monopoly) and the sidequest WORLD Diseney town which features Ice Cream Beat and Rumble Racing among others.
I rate this KH best in series and it really ties all the loose storyline threads together nicely, while setting up for the next line of KH titles. Factoring in the Mirage arena and the new critical level one mode, this game has replay value to rival The Elder Scrolls series, This is the definitive PSP title.