Sonic Mega Collection

Enter these at the bottom of the screen to advance further.

3659 8960 3263 - Level 1
2965 3192 9023 - Level 2
3610 2354 7327 - Level 3
2921 0274 3999 - Level 4
3737 7423 1487 - Level 5
3053 9029 9071 - Level 6
2340 2318 5760 - Secret Level

Start Sonic The Hedgehog and Sonic 3D Blast twenty times each.

Select manual mode, then press Z(3), Up(3), Down(3), L, R, Z. A sound will confirm correct code entry.

Start a 1-player game on AIZ and grab a swing.While swinging, press left left left right right right up up up. You will hear a ring sound if entered correctly. Then pause and press A to return to the title screen. Press down twice to highlight the sound test you unlocked and press start. Select Mushroom Hill and do the same thing on the first thing you can hang on to (like the swing vines in AIZ). Do the same 3 left 3 right 3 up pause and press A. Go to the sound test and simply hold down A while selecting a level. Also while on level select, press C to change character. 00 = Sonic & Tails 01 = Sonic 02 = Tails 03 = Knuckles.

There are 3 games that use Debug Mode. Sonics 1, 2, and 3. For Sonic 1, press X, X, up, down, left, right. You should hear a chime to confirm the code. Now hold A and press Start. Hold A until Sonic appears. For Sonic 2, play sounds 1, 9, 9, 2, 1, 1, 2, then play 4. (sometimes you might need to do it 2 times in a row) You'll also hear a chime for the code to be right. Now hold A and press Start until the stage begins. (you must use the Stage Select for this code to work)
For Sonic 3, use the Stage Select, highlight a stage and hold A and press Start. After you do one of these codes, you can do one of the following things.

B = change into an item

A = change into a different item

B (again) = change back into Sonic

X = put item on the screen

Tips:

#1: In Sonic 1, you are invincible using Debug Mode

#2: Using Debug Mode on Sonic 2, you can put a lot of rings on the screen, you can turn into Super Sonic very easily.

#3: You can usually change into a big 'glitched' thing. If you place it on the screen, there should be a paddle on top. Jump on it and you automatically pass the stage.