Sonic the Hedgehog 2 Cheats

Extra Lives in the Chemical Plant

If you have Sonic {and} Knuckles, hook it onto Sonic 2. Play until Chemical Plant Act 1. When you get to the wall with the Spiny badnik and the warp tube on the floor. Break open the tube and go through it. When you come out you will see a Ring Box next to a tower. Climb up the tower and on the top you will find one 1-up. Glide left and you will find another 1-up. Glide to the left one more time and you will find yet one more 1-up. Since you won't want to go through the level again just glide to the right until you get to the tower you started from. Get on that first tower and glide to the right. The Act will be over and you will have 3 lives more that how much you started the act with.