Sonic 3 & Knuckles
Cheats
Sonic 3 - Act and Sound Select (Sound Test): Sonic Jam Version: At the Sonic 3 Title Screen, Press Up, Up, Down, Down, Up, Up, Up, Up. Genesis Version: You must do this code before the title screen. Although I myself don't use this code due to its extreme difficulty to do, you can try as much as you want
Sonic 3 - Edit Mode: Go to the Sound Test Menu. Select an Act, hold A and press Start. During the game, press: A: switch from one character to another (Anti-Gravity with edit mode off) , B: edit mode on/off, C: place character (jump with edit mode off)
Sonic 3 - 99 lives: On the Sonic and Knuckles Collection CD, you can get 99 extra men. Just go to The Launch Pad Level and do a spin dash (without moving) on one of those alarms. The robots will come and knock int you and give you points. Your points will climb high enough you will get a 1-up. If you are patient enough, you will get up to 99 lives.
Sonic 3 - Cross Cartridge level select: To do this trick, you need to have the Sonic 2 cart. Load up Sonic 2 and do the level select code in the options menu. (19,65,09,17 for those of you who do not know the code) At the title screen, hold A and press Start to go to the level select menu. Hold A and gently take the cart out of the Genesis. The music should still be going, but sound different. Place Sonic 3 in the Genesis while still holding A and reset the deck. Release A and press Down twice (or Up once) to get the Sound Test option, which is in fact the level select menu for Sonic 3. You can also change Tails' name using this method. Do the code (Up, Up, Up, Down, Down, Down, Up) before you pull the game out. His name will not change above the lives counter, but it will change when you complete an Act.
Sonic & Knuckles - Act and Sound Select: In Mushroom Hill Zone Act 1, grab one of the pull-down pumps and press Left, Left, Left, Right, Right, Right, Up, Up, Up. When you hear the ring sound, pause the game and press A. On the title screen, hold A & press Start.
Sonic 3 & Knuckles - Act and Sound Select (Sound Test) & Edit Mode: In Sonic 3 connected to Sonic & Knuckles, use these 2 codes for Level Select & Debug: Level Select: Go to Angel Island Zone. Grab one of the swinging vines and press Left, Left, Left, Right, Right, Right, Up, Up, Up. When you hear the ring sound, pause the game and press A. On the Title Screen, go down past the Competition choice and enter the Sound Test choice. Debug: Enter the previous Level Select Code. Go into the Sound Test screen, and enter Mushroom Hill Zone, Act 1 or 2. Grab one of the pump things (called Pendulums in Sonic and Knuckles) and enter the Level Select code. When you hear the ring sound, pause and press A to restart. Go to the Sound Test screen again. When you enter a Zone, hold A and Start until the letters leave the screen. Unpause the game, and use the regular Debug keys (B to enter, A to switch, C to place) to place object.
Sonic 3 & Knuckles - Access granted: Notice that when you use the level select some charecters can't visit a certain level? Well, simply activate debug mode and rush complete an act. Sometimes it works, other times not... fiddle around for a few levels or so, and you'll find EVERY ZONE IS ACCESIBLE TO EVERY CHARECTER!!!! (Note: In some situations, it's impossible to win. (Ie, Death Egg Zone 1 Boss with Knux) wiithout debug mode.)
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