the PSP be limit by have only one analog stick , and psp user know when play FPS game it become so frustrating . this game instead be a third person shooter , basically overhead , and the creator make this game as fun as it could be on the psp . you aim and shoot with the analog , you get grenade , a lot of weapon , after mission you be reward base on you performance and uncover of veteran money , basically you use this to buy more cool weapon . there be plenty of weapon , feature , mission and they include a update to bring another act with several mission as a free bonus , plus they include a update for free online play . a great package and a great psp game with a entertaining story line , fun game play and rich graphic .