This is one of the best games on the PSP.
User Rating: 9.3 | Metal Gear Acid 2 PSP
I believe this may be the best game on the PSP it is addicting and has great gameplay and tons of extras lots of boss battles and you fight a couple metal gears lol. But the new thing i like the most is the new artwork and graphics they are Cel Shaded and they are very nice looking on the PSP. The story is easy to follow but the only thing i don't like is that they don't speak which isn't that bad but it gets a little boring. There are over 500 cards to collect and they are all different some even have videos that go with them. The game gets a little easy but collecting the extras and updating your cards keep you pretty busy and you even have a girl partner like the last Acid. So if you like Metal Gear and you don't hate Card Battles and turn based stratedgy then please get this game it is awesome and it will keep you playing for a long time. 
