Love Sonic the Hedgehog and Super Mario Bros.? Wish that there's a game that lets you play them both at the same time? Well, actually there is.
Here's Somari, starring the world's fastest Italian plumber, which was released as a bootleg Famicom cartridge back in 1994.
Check out the video clip of the game play, along with 6 other crazy ROM hacks in this article by Kieran Brown over at FDC: Link (Don't miss the Teenage Mammal Nice Chipmunks II) - Thanks Jack!