This is just one of those games that was never advertised widely, but if you found it you spent hours and hours playing it. With over 5000 levels it's pretty redundant, but fun. Collecting all the rings within a level lets you skip ahead in a few levels. No one that I've known has ever reached the end of this game, but it's still fun to challenge friend to see just who can get the farthest. To get this game you had to have the first Sonic the Hedgehog game and Sonic and Knuckles. Insert the Sonic the hedgehog cartridge into the Sonic and Knuckles Cartridge and your good to go. To get the game started you have to press all three A,B and C buttons together. After that you can switch from Sonic to Knuckles by pressing A, B or C. There is an Easy level select down below and here is a list of all the codes with some additional game information.

Collect the Spheres Rom