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The Devil's Machine is a machine that appears to be made of flesh. Its purpose is to keep Giygas's powers under control, which is why Giygas is kept inside the machine.

Plot

After Ness's group crosses the Cave of the Past and goes through the crevice at the end of the cave, they land on the Devil's Machine. The group must first follow the long path on the flesh-like pipes until they finally reach the core of the machine. When Ness's group reached the core of the machine, the Devil's Machine began to react. An afterimage of Ness's head appeared from the center of the machine. Immediately afterwards, Porky appeared. And immediately afterward, the final battle began. Giygas, who was in the Devil's Machine, is invulnerable, which is why Porky is the primary target. After Porky has taken a certain amount of damage, Porky shuts down the Devil's Machine, causing Giygas to lose control of his powers and the second phase of the battle begins. After that, the Devil's Machine no longer plays a role in the game.