Loading the game with a Currah Microspeech unit attached activates a hidden mini-game, where the player must dive to catch 20 goldfish without touching another creature or running out of air. The mini-game starts when demo mode is activated, after waiting some time at the animated screen or main menu. Apparently this mini-game wasn't intended for the final release, it's only activated by accident as side effect of the Currah interface presence. Or you can use POKE 52796,24: POKE 52797,03 to start this mini-game instead of the original game.
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