Sonic & Knuckles (prototype; 1994-06-06)/Hidden content

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When locked-on to Sonic 3

The following content can only be accessed when this prototype is locked-on to Sonic the Hedgehog 3.

Level select

SK level select.png

Once the title screen appears, press Up Up Down Down Up Up Up Up, then select "Sound Test".

Edit mode


Enabled when the Level Select is enabled. Press and hold A while selecting a level on the Level Select screen.

All Chaos Emeralds

Play sounds 02, 04, 06, 08 in the sound test. A Chaos Emerald sound will confirm correct entry.


Sonic & Knuckles (prototype; 1994-06-06), prototype version of Sonic & Knuckles
Sonic & Knuckles title.png

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Part of Sonic & Knuckles development