I highly recommend Folklore.



"Folklore is an action-adventure game with minor role-playing video game elements, where players control characters in a third-person view to both explore their surroundings and engage in combat."

Source from Wikipedia.

Make sure to try out their demo on PSN.

I highly recommend Lost Planet 2.



"Lost Planet 2 is a third-person shooter video game developed and published by Capcom... Many gameplay features from the original Lost Planet game are present. Recurring elements include major boss battles, extreme terrain, and the ability to pilot mechanized armor suits, known as Vital Suits (VSs). "

Source from Wikipedia.

Make sure to try out their demos on PSN.

I recommend Critter Crunch . It has one of the cutest protagonists for a puzzle game ever and the stages are all named after food or something having to do with eating (e.g. The Tree of Delicious)

It's also one of the few ps3 games to have a custom soundtrack but you can't use it in online play . Either way, the game's music is good .

or

I recommend Suikoden Tactics as well if you enjoy fire emblem and FF Tactics.