Could you recommend some good games for PSP?

[[Unknown]]

Well, I think Crisis Core is a well liked good game. As long as you don't find RPGs boring, it's definitely worth getting and trying. That said, it'll be a lot more interesting if you ever played Final Fantasy 7.

I'm a big fan of RPGs, and I like even ones that are a bit campy. But, some that are well liked or well polished are:
* Persona 3 Portable
* Final Fantasy 4
* Lunar: Silver Star Story Complete
* Legend of Heroes: Trails in the Sky
* Crimson Gem Saga

Outside RPGs I like, here are some other games I recommend / hear people like a lot:
* Patapon
* God of War
* Monster Hunter (any or newest)
* Wipeout Pulse
* Lumines

Of course, there are a ton of good games for the PSP, so without filtering by genre it's hard to make recommendations. But if you've never tried the above games they're definitely worth a try imho (among many others.)

-[Unknown]