Note to fanboys: Just because it's card based dosen't mean it's bad.

User Rating: 8.7 | Metal Gear Acid PSP
Metal Gear Acid is card based. And it's the most addicting game for the Playstation Portable. You use cards for everything. Moving, shooting, card board box wearing, everything. It might seem tedious and boring at first, but soon you get the hang of it and it is great fun. I recommend starting a file, playing about 3/4 of the way through, and then starting a new file. The graphics in the game are excellent especially for a handheld. The music is great as well. I reccomend buying it and trying something new. So in conclusion: Buy it. It is the best game for the PSP.