It's like Pro Action replay, but it's very obscure. All I know about it I put in this article: http://gamehacking.org/wiki/Game_Wizard_(Genesis) I couldn't find a pic of it or anything. There's one guy who made a youtube video about it: [video=youtube;cye8Ny75msc] So anyone know anything more? This could use a article on sega retro, but I figure you guys need more info than what we got. Edit: I should mention the SNES port of Game Wizard had two cartridge slots. One for the game and another for an accessory cartridge. The two accessory cartridge they had was one for new code saving. And another one that came preloaded with codes. I can't confirm if the genesis port had the same feature but I wouldn't doubt it.
I've owned both the SNES and Genesis versions, but sadly sold them along with most of my other gaming goodies many years ago (when I was young and foolish). The SNES version is as you've described, though I've never been able to obtain the accessory cart for it. The Genesis version is *exactly* the same as what's in the image on the link you've posted, and has a single cartridge port - no way to add accessory carts. I've recently visited the shop I've sold them to, and he still has them on the shelf for $20> each IIRC. Now you've tempted me to go back and pick them up.
I remember seeing this in a Radio Shack in-store catalog (you could go to Radio Shack, and have the store order games, etc) to be picked at the store and this was one of the items along with the SNES boasting you could make your own codes up for order.
