If I am going to go inside a game interactively as has been suggested here, I think it would be more fun to go into Robocod or Zool - or someone would need to code a Yellow Submarine game just so you could go to Pepperland in your suit.
But I still can't help thinking about a game in which I must battle a dominatrix to free her bitch kingpin bevy of sluts from her rule. That would be a game ending to top all game endings. They could name it, maybe, Whorrican!
(i kill me)