Game is fun and graphics look great on the PSP. Controls are simple so you can play for a long time without your hands hurting. You use the two clear shoulder buttons, 3 of the 4 right side buttons, and the thumb pad on the left. There are a lot of levels, but many of them are different missions using the same maps (sky, sea, desert, or island).
Lots of planes to choose from and lots of ways to customize each. The weapon upgrades available to purchase make a difference. You can also purchase different looks for your plane from tiger stripes to the British flag.
Game will require many hours of play in order to purchase every weapon upgrade and every optional look for each plane.