Tiny Toon Adventures

Tiny Toon Adventures is a NES game by Konami, based on the 1990s cartoon.

Stage Select
The US version of this game has a Level Select cheat. To access it, enter this code at the title screen: A, A, A, B, B, B, Select, Select, Select, A, Start.

Choose a level by pressing Up or Down, then press Start.

Player No Damage
The Japanese version also has the Level Select, but with an additional option to turn on "Player No Damage" mode. To access it, enter this code at the title screen: Up, Right, Down, Left, Up, Right, Down, Left, B, A, Select, Select, Select, Start.

Choose a level by pressing Up or Down, toggle Player No Damage by pressing Select, then press Start.

The US version has this option disabled, but you can access it by using this Game Genie code:.

Build Dates
An ID string listing the build version and date can be found at the end of the PRG ROM: MAST910809 MAST means it's the "master" version, and the numbers represent the date. As a result, we can tell that this build was compiled on August 9, 1991.

Anti-Piracy
As with most games Konami published in the '90s, this game features a copy-protection routine. At the start of the game, the CHR ROM checksum is calculated to ensure its consistency, and a flag is set if there's a consistency failure.

If the flag is set, completing the final level will cause the game to loop back to the first level instead of playing the ending sequence.