Did you ever want to play Super Mario Brothers as Link, Samus, Mega Man, or other 8 bit Nintendo Characters?
now you can. Must be seen to be enjoyed.
Yep, I discovered this last night. Very cool! I’ve always been a fan of video game crossovers. I want to drive the Carmageddon car through a Counterstrike match! 
I was just on my way here to post that! Damn you for beating me to it!
It reminds me of when i was a kid and thought I could take my Megaman cartridge and somehow break it open and connect it to the Mario cartridge, and then put that into my NES and do exactly what this game lets you do.
Also, the Contra gut with spread is like a freakin’ goomba holocaust.
We real geeks have been doing it forever with ROM hacks. 
Our Link even gets bigger.
Yeah, I found this linked from Destructoid
Pretty cool. More fun as a nostalgia trip than as a game, but very well done.
Digg had it as well.
It was amazing. Everyone and their brother was ready to say that X or Y couldn’t happen based on the rules of The Mushroom Kingdom or based on the rules of land the character came from.
I would love for those commenters to make a game half as good as what was presented.