Games[]
- Blue Sphere: Play 20 times of Sonic the Hedgehog and Sonic 3D Blast.
- Knuckles in Sonic 2: Play 20 times of Sonic the Hedgehog 2 and Sonic Spinball.
- Sonic 3 & Knuckles: Play 20 times of Sonic the Hedgehog 3 and Sonic & Knuckles.
- Flicky: Play 30 times of Dr. Robotnik's Mean Bean Machine.
- Ristar: Play 30 times of Blue Sphere, Knuckles in Sonic 2, Sonic 3 & Knuckles, and Flicky.
- The Ooze: Unlock all five of the games, or play Sonic Heroes.
- Comix Zone: Play the Sega Genesis games 50 times, or play Sonic Heroes.
Level Select[]
- Sonic the Hedgehog: At the title screen, press
, 
, 
and 
, and you'll hear a ring chime. Hold and press start. - Sonic the Hedgehog 2: Go to options, and press the following tunes: 19, 65, 09, and 17, then you'll hear a ring chime. Go back to the title screen and hold and press start.
- Sonic the Hedgehog 3: In the Sega logo, press , , , , , , , , then you'll hear a ring chime.
- Sonic & Knuckles: In Mushroom Hill Zone, press , , , , , , , , , then you'll hear a ring chime. Hold and press start.
- Sonic 3D Blast: In the title screen, press , , , , , , , and , then press start.
- Sonic Spinball: Go to the options menu and press , , , , , , , , , , , , , , and .
- Knuckles in Sonic 2: Press , , , , , , , , , at the title screen, then you'll hear a ring chime. Hold and press start.
- Sonic 3 & Knuckles: In Angel Island Zone, press , , , , , , , , , then you'll hear a ring chime.
- Flicky: Hold , , , and press start.
- Ristar: Enter the code, ILOVEU.
- The Ooze: In the options menu, go to sound test, then press the button for each entry, 009, 019, 010, 024, 011, 013, 006, 027, 006, 088, 003, and 030, then you'll hear the line sound effect, "Yes!". Hold and press start.
- Comix Zone: In the Jukebox menu, press for the sounds, 14, 15, 18, 5, 13, 1, 3, 18, 15, and 6, then you'll hear the line sound effect, "Oh, yeah!".
Debug Mode[]
- Sonic the Hedgehog: Press and hold , then press , , , , , , , and , then you'll hear a ring chime. Hold the button and press start.
- Sonic the Hedgehog 2: Press the following tunes, 01, 09, 09, 02, 01, 01, 02, 04 in the Level Select sound test, then hold and press start.
- Sonic the Hedgehog 3: In Level Select, hold and press start.
- Sonic 3 & Knuckles: In Mushroom Hill Zone, press , , , , , , , , , then you'll hear a ring chime. In Level Select, hold and press start.