Sonic the Hedgehog Genesis/Hidden content

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Unused content

Music

Audio	Description
	In the Juke Box is "BGM 19 UNDERWATER 2", a unused song. It's a slightly shorter and reduced-instrumentation version of the countdown music (BGM 18 UNDERWATER 1).

Cheat device codes

Codebreaker

Unofficial codes

Code	Effect
330030EE 0003	Infinite Lives.
83002208 0000	Infinite Time.
830021F0 7F00 + 830021F2 9896	Max Score.
830030EC 03E7	Max/Infinite Rings.

References

Sonic the Hedgehog (16-bit)

Main page (Gen|2013|3D|Ages) Maps Achievements Comparisons Manuals Promotional material Magazine articles Reception Merchandise Development Hidden content (Gen) (2013) Bugs (Gen) Region coding Hacking guide

Levels Enemies Bosses Media Green Hill Marble Spring Yard Labyrinth Star Light Scrap Brain Final Special Stage Ball Hog Batbrain Bomb Burrobot Buzz Bomber Caterkiller Chopper Crabmeat Jaws Moto Bug Newtron Orbinaut Roller Spikes Green Hill Marble Spring Yard Labyrinth Star Light Final Books: <div class="bobscreen" style="width:80px; height:px; display:inline-block; text-align:center; overflow:hidden;"> File:MegaDriveFan JP 19910701 f.pdf Story Comic Koushiki Guide Book Hisshou Kouryakuhou Sega's Official Player's Guide An Official Player's Guide Music: 1&2 Soundtrack show;hide </div>