If you're going to infringe on copyright, you might infringe on all the copyrights at the same time. That way you can keep track of who's taking you to court. Mario Crossover 2.0, the sequel to the already astonishingly rippy-offy original, is a remarkably slick mash-up of all the best Nintendo games. And Zelda.
Crossover 2.0 takes the basic concept of allowing characters like Samus (from Metroid), or Link (from Meh-lda) to run around Mario levels and runs in crazy directions with it. Mega-Man tossing blocks at Koopas, Samus blasting them with her arm gun thing, Link boring them to death with his boring-ness. I love the idea of in-game power-ups upgrading the graphics, taking the player into a modern era with every mushroom, and sliding back through history when damage is taken. And Ryu fighting Bowser is just precious. Feast your eyes on the entire roster in this demonstrative video-gram from a bygone era.
It's expected to arrive in the first months of 2012.