Tic Tac Earth by Johndo21 is a Nintendo Game Boy (Color) homebrew game.
Tic Tac Earth becomes the first Game Boy game playable both for “sighted” and “blind” people. The starting beep indicates the number of keys needed to activate the sequence (from 1 to 8). Once the key is found, a short “bonus” sound is triggered, once the sequence is completed, a long “bonus” sound is triggered. Once the 8 sequences are completed, the end music starts for 60 seconds, and the game restarts automatically.