Top playable games in psp  

I liked God of war, Crash bandicoot and castlevania a lot.

I haven't played it on psp but on PS1 those were awesome.

Tekken: dark ressurection and Capcom Classics Collection have both eaten up a fair bit of time for me personally.
I know that long international flights seem to be a lot shorter thanks to these two games.

Classics Collection has all the old versions of Street Fighter II on it, and they're still a ton of fun to play today.

God Of War for PSP thats the best..
Is one of the best sell title for PS2..

i liked god of war, burnout legends and syphoon filter series

Recently, I've been playing DJ Max series:

DJ Max Portable

DJ Max Portable 2

DJ Max Portable Claziquai Edition

DJ Max Portbale Black Square

and the latest, DJ Max Portable Fever

All of these games are music/rhythm games that I could play over and over again. It does wear out your buttons though.. good thing I could replace them anytime as they could be purchased in reasonable prices.

Late, I've been into more action like Tenchu: Time ofthe Assasins.. I'm still waiting for the english version of their fourth Tenchu game.

On sports, I'd have to say Virtua Tennis World Tour and it would be nice if I could play with my friends with their own developed players.

Last but certainly not the least would be Tekken Dark Resurrection. I could finish every character if I want to but still continue on playing. Playing with friends is also a good thing about fighting games like these as you get to see who among you would be good at.

I just like to enjoy games that I could still play even after finishing any narrative in it (^_^ )

gta games, but im playing wrc right now.

try dynasty warrior games, they have long playability.