How to Get to the Sound Test Room in Undertale?
To reach the sound test room in Undertale, load your save file and name your character ‘Gaster’. Once you do this and start the game, you’ll be taken directly to a hidden room with a sound test menu!
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You can access the sound test room by editing your save file. Change the 'Name' value to Gaster, and you'll spawn in the room when you reload the file!
I’ve done it myself! Just rename your save file to 'Gaster' and you'll enter the mysterious sound test room when you start the game. Easy peasy!
Forget about the sound test room. Just enjoy the game’s amazing soundtrack while playing!
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