If you haven’t seen this or played this yet, take a few minutes and check it out. These guys took Super Mario Bros and added a bunch of playable characters which include; Link, Mega Man, Simon, Samus, and Bill. It’s really well done and will kill a few hours of your time. Select a character and not only do you get their special moves, but background theme plays too. It just rocks.

http://www.playedonline.com/game/598161/super-mario-crossover.html