Some more old codes:
Code:
Marble Madness.gbc Access Lost 2 Player Mode (Marble Madness has an unfinished two-player mode. The red marble was fully programmed and behaves the same as the blue marble. Game Genie code 0D0-348-C4A will load the two-player link screen directly after the Midway logo starting a race. The game will return to the main menu If an error occurs with the link connection for either player. There are a few things worth noting about the unfinished two-player mode: Player 2 (Red) has a blue timer. After player 2 completes a race, the goal will be blue. The second player will not be able to enter their score. When either player runs out of time, they will be booted to the main menu and the race will continue for the other player. Both players have to press start to advance to the game at startup otherwise it will proceed as normal. Codebreaker cheat devices are required for both players and it can take some trickery to work as the link cable has timing errors depending on the cable used.) 0D0-348-C4A Access 2 Player Placeholder Link Screen ( Neither linked Game Boys will communicate. The reset game function works as intended when select button is pressed.) 00F-B8B-E62 Unused Demo Message 1 0109ADCA Unused Demo Message 2 010AADCA
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