What would you do if you could channel millions of volts through your fingertips? Take to the streets and try to right the world's wrongs? Create pandemonium with your newfound abilities, dealing out death and destruction with the flick of a wrist? Or simply kick back on the sofa and impress your mates as you flick through the digi-box without the aid of a remote control? That's the predicament at the centre of Sucker Punch's Infamous, an open world game with a superhero lilt that's easily one of the finest PlayStation 3 exclusives to date.