Devil's Tuning Fork is an exploration game viewed from a first-person perspective, where you play as a child trapped in an alternate reality after catching a strange illness and falling into a coma. The unknown world is a dark one and has no illumination, but a tuning fork that you find at the start of your adventure can be used to feel your way around the maze of rooms and platforms.

Locked doors can either be opened by collecting all toys inside a room, or by ringing a bell or a gong using a sound wave projected from your fork. Progress is saved automatically at checkpoint locations scattered throughout the maze, although if you quit the game and return to it later you will find that your previous save is no longer accessible. Some of the challenges are repetitive as well, especially when you are waiting for a moving platform to reach you for the umpteenth time, or trying to stand on the right spot to bounce a wave off a mirror and hit a gong. (Windows, 42.8MB)