How to Get to Debug Mode on "Sonic & Knuckles"

"Sonic and Knuckles" is the fourth-game in the Sonic the Hedgehog series and was the first game in which Knuckles the Echidna made an appearance. Because of its cartridge-slot design, "Sonic and Knuckles" is able to connect with "Sonic the Hedgehog 2" and "Sonic the Hedgehog 3," allowing players to play through the games as Knuckles. Because of its ability to connect to those two games, both of which have debug modes, you can enter debug mode in "Sonic and Knuckles," which allows you to play as an invincible character as well as mess with the game by adding objects or playing in slow motion.

Instructions

Sonic the Hedgehog 2

1. Connect "Sonic the Hedgehog 2" to "Sonic and Knuckles" by inserting it into the cartridge-slot of "Sonic and Knuckles."

2. Enter the "Sound Test" mode from the options menu.

3. Play the following songs in this order: Song 1, Song 9, Song 9, Song 4, Song 1, Song 0, Song 1 and Song 8.

4. Select any level, hold the "A" button and press "Start" to enter the debug mode.

Sonic the Hedgehog 3

1. Connect "Sonic the Hedgehog 3" to "Sonic and Knuckles" by inserting it into the cartridge-slot of "Sonic and Knuckles."

2. Grab a vine in Angel Island to enter the "Sound Test" mode.

3. Press left three times, right three times and then up three times. If done correctly, you will hear a chime.

4. Grab a pulley in the Mushroom Hill level and press left three times, right three times and up three times. You should hear another chime.

5. Pause the level and press the "Start" button. Select a level, hold the "A" button and press "Start" to enter debug mode.