All Chaos Emeralds: Enable the "Level select" code. Highlight the "Special Stage" level and press C + Start. Collect the emerald, press A + Start, and repeat the procedure to collect all the emeralds. Alternatively, enable the "Level Select" code and go to "Sound Test". In the level selection menu, play the following songs in order: 1, 2, 4, 5 and 6. If done correctly, The Chaos Emerald sound will play. Highlight a level and press Start to begin game play. Obtain 50 rings, jump, and press Jump again while in the air to become Super Sonic.

Super Sonic: Enable the "Level select" and "Debug mode" codes. Activate the debug mode keep changing the item until you see a box with an "S" on it. Create that box jump on it to become Super Sonic.

Extra lives: Set off the first alarm on Launch Base act 1. Wait in the middle of the alarm and perform stationary Spin-Dash attacks on the Flybots whilst continuing to set off the alarm. The value of the Flybots will eventually increase to 10,000 points as they continue to attack. Accumulate points and lives at this location.

Bonus stage: Enable the "Level select" code. Enter the sound test screen and play song 01 and 0F.Highlight level 2, hold A and press Start. Enable the "Debug mode" code. Go to the first level in the stage selection screen and keep playing until you get enough points to go to the gumball machine bonus level. After you start, press B to enable debug mode. Press A until you turn into a red spring. Press C to make springs all along the gap in the centre. Next, press B again to turn back into Sonic and you will get extra power-ups. When finished, use debug mode to transport you under the springs, where you will go back to the level. Note: It is a lot easier if the bouncers on the wall are most all used up.

Super Tails: Enable the "Level select" code. At the title screen, highlight "1 Player" and press Start. On the data select screen, choose to play as Tails. When Tails appears on screen, press Reset. Highlight "Sound test" and press Start at the title screen. Select a desired level and press C + Start. When the game starts, you should see Tails on screen. Turn Tails into an object by pressing B. Keep changing objects until you see a box (you should see an "S" in it) by pressing A and press C to place it. Turn back into Tails and jump on the box to become Super Tails. Tails will look strange and he cannot be hurt from Badniks and Energy Ball Attacks. He can still be squashed and drowned, though, so be careful when playing Icecap. You will have to do this at the beginning of each Zone. Also, Dr. Robotnik can still hurt him at the very end of Launch Base Act 2.

Random start: Enable the "Level select" code. Select a level and begin gameplay. Pause gameplay and press A to return to the level selection menu. Choose another level to resume start in a different area. Important note: Sonic may resume gameplay inside an object and crash the game.

View animations: Enable the "Level select" code, then press B + C.

Sonic and Knuckles music: In the Hydrocity Act 2, before you fight Dr. Robotnik, stand in the water without jumping until the ‘drowning’ music sounds. Then jump out of the water. The boss music will now be that of Sonic and Knuckles.

Mental Sonic: Enable the "Debug mode" code. Press B + C during game play. Sonic will go mental, and dash about on the spot, turn upside down, and do other stunts. This can also be done with Tails.

Night game: Enable the "Level select" code. Highlight a level and press C + Start.

Bonus Stage (Gum Ball machine): Enable the "Level Select/Sound Test" codes. If you try to select the "Bonus" option in that screen, you will find that it will not work. Instead, press Start on the third selection down from the "1P vs 2P" options. In Act 2 of that option, you will be taken to the bonus stage. To quit, pause and press Start. Note: After several tries on the bonus stage, the title may glitch and display "DOILUS STAGE" instead of "BONUS STAGE". If you quit after this happens, the sound test menu may go off the screen, and any options that were previously at the bottom of the screen will be at the top, and look out of place.

Strange Sonic and Tails: Enable the "Debug mode" code. In Launch Base Zone Act 2, complete the game. When Sonic or Tails jumps toward you, press B to turn into an object and then press B again to turn back into your character. You can control Sonic or Tails in the background for a short time. However, they will look like robots.

Run in air: Enable the "Debug mode" code. When you will finish a level, quickly press B to transform into an object and paste the Super Sonic monitor (a monitor with an "S") into the air. Hit it, and Sonic will run in the air.

Metal graphics: On the first level, when going through the tunnel to the part with the blimp, enable the "Debug" code. Go back through the tunnel. While in the middle, the graphics will glitch to look like metal.

Tails with spinning head: At Hydrocity Act 2, find the first place that you see the blue and purple spinning thing that moves up and down. Have Tails as player two zoom up and land on it. Have Sonic wait until it goes up and down a few times, then have him zoom and land on it. Wait a few seconds to see tails come down with a spinning head.

Strange objects: Enable the "Level select" code then enter the sound test. Highlight the first level and hold A and press Start. When you get to the part where Knuckles takes your Chaos Emeralds, press B and move out of the way. Then, turn back into Sonic, walk back to Knuckles, and quickly press B. Then, press A until you see a strange glitch (it might have a part of Sonic's head). Press C to create it and there will be a Sonic on a flying snowboard with all sorts of things coming out the back of it. Create a monitor box with the "S" in it to make Sonic look like Super Sonic.