I always used to wish that some enterprising developer would take the openworld template of Grand Theft Auto and apply it to Batman. Not just any Batman, but specifically the wonderful 1960s TV Batman, with his outrageous rogue's gallery of villains, slapstick humour and an appropriately titled gadget for every occasion. Roaming a virtual Gotham, you'd foil plots by villains both famous and infamous by land, sea and air. Heck, you could even get Adam West and Burt Ward to reprise their roles in voiceover.
__________
Review: Eurogamer