Sure, they're stepping all over proprietary rights and copyright, but something must be said about the amount of bliss-filled nostalgia inside Exploding Rabbit's Super Mario Crossover. If the plumbers never really did it for you, you can now kill those goombas as Link, Mega Man, Samus, Simon Belmont, or Contra's Bill. Goodbye jumping and spitting; hello slicing, whipping, and shooting. Is this one of the early firsts in the new genre of video game mashups?