There are many, but some of them are Uncharted,2, inFamous, COD4,6 GTAIV, Metal Gear Solid / Black Ops
There is no "best PS3 game" in the world, because it depends on what you like the best. There are some exclusive and popular games for the PS3 like Uncharted 3, Resistence, Call of Duty, Battlefiled 3, Metal Gear Solid 4, Assassin's Creed 3, Grand theft Auto and many more.
NO it was aclaimed the BEST PS3 game!
There is no world's best, but for now, the best games are Uncharted, Uncharted 2, and Call Of Duty: Modern Warfare 2
the best ps3 game is What ever you think
Infamous 2
Ps3 or psp are the best.
In my opinion Dead Island is the best, it depends on what you think of the game.
FALLOUT 3
uncharted 2
Killzone 3
Demon's Souls
fifa 11