Just because the SNES cartridge board connector can fit into an N64 slot with the use of a gameshark or universal adapter doesn't mean that anything is going to happen when you turn the power on. While I haven't tried it, I highly doubt that the setup shown in the picture above will give you anything other than a black screen. For one thing the N64 uses a 64 bit architecture with 3D graphics while the SNES is 16 and 2D: the data reads from the ROM cart would be totally different. As far as I know the only way to play SNES games on the N64 is to pay $500+ for a Tri-Star which has image quality issues and basically is the size of an SNES that sits on top of the N64 with its own power and video out cables... Don't get me wrong, I would love to play SNES games on my N64 just to have less consoles lying around, I just don't think that there is a viable way to do it until somebody designs a small form factor game-shark style adapter that fully converts the SNES 16 bit instruction set into something that is understandable to the N64's architecture... I am thinking of an emulator that runs SNES gameplay as FMV into the N64's hardware or something.