Puyo Puyo/Hidden content
From Sega Retro
- Back to: Puyo Puyo.
Mega Drive version
Sound test
On the title screen, press 
. A sound will signal the code has been entered correctly, and a "sound test" option will appear in the options menu.
This feature can be unlocked legitimately by beating the game on any difficulty.
Game Gear version
Sega logo ™ symbol
While not released in Japan, code exists to remove the ™ symbol from the introductory Sega logo if the game detects it is being played on a Japanese system.
References
