Mickey Mania: The Timeless Adventures of Mickey Mouse (Genesis)

Mickey Mania is a platform game where you control Mickey Mouse through over 20 levels, based on seven Mickey cartoons from 1928 to 1990, while throwing marbles at enemies and stuff. Other versions exist for the Mega CD/Sega CD, SNES, and PlayStation, with the PlayStation version being titled Mickey's Wild Adventure.

Level Select
Go to the Sound Test, set the music to CONTINUE, set the S.E. to APPEAR, set the voice to THINK..., then highlight EXIT and hold Left for five seconds. A short chime will play. Start the game as normal, and the level select screen will appear.

Time Warp
Starting at offset in the US ROM is unused text for travelling backwards and forwards in time: WOW! MICKEY HAS MANAGED TO FIND A TIME WARP!!!! MICKEY GOES BACKWARD..

WOW! MICKEY HAS MANAGED TO FIND A TIME WARP!!!! MICKEY GOES FORWARD..

Placeholder Text
Located at offset is the following string: MICKEY MANIA! OPTION AND TITLE SCREENS WILL GO HERE PRESS A BUTTON TO PLAY

At offset you'll find the following string: CONGRATULATIONS! GAME COMPLETE BIT WILL GO IN HERE...

Regional Differences
The Japanese version uses a newer Traveller's Tales logo, a different title screen, and Japanese message screens, but that's it.

Japanese Lockout
If you load the Japanese game into a US or European system, the lockout screen will say "Developed for use only with NTSC Mega Drive Systems". Oddly, if you use a mod switch or emulator to set the system region to Japan while this screen is displayed, the message will change to "Oh...This machine has some how become an NTSC Mega Drive System" and the game will start.