fun multiplayers

i need recommendations on fun games that supports ad-hoc multiplayer, because im planning to get my brother a psp as well for his birthday.

and i mean "fun", not like "oh yeah this is fun"-fun, but "haahhahhha, omigosh, this game is so totally fun and ive never hadthis much fun sincemy last visit to disneylandhahahaha"-fun.

thanks! remember not just fun, but supports multiplayer :D

This should do it and oh many of the upcoming PSP titles will support ad-hoc :)

Resistance: Retribution

LocoRoco 2

Hammerin' Hero

Tekken: Dark Resurrection

Sid Meier's Pirates

Star Wars Battlefront: Squadron

Juiced: Eliminator

After Burner: Black Falcon

Parappa the Rapper

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Either of the Star Wars Battlefronts, Killzone Liberation, Untold Legends and GRAW 2 all have some fun coop multiplayer.