The Mad God reigns supreme over a remote cluster of asteroids known as Grumblemoor. The creatures of this strange land have but one hope for liberation: an ancient prophecy which foretells the coming of a creature from the deepest reaches of space. The chosen one, known only as the Grumbler, shines a light on a future wrought with unyielding shadow. But the universe hangs in the balance, for the prophecy states that to bring light back to the land of Grumblemoor, one must purge the darkness within.

Grumblemoor is a 2d action-platformer with collectathon, puzzler, and rogue-like elements. The Demo lets you explore a colorful haunted world, fight and befriend its bizarre inhabitants, and unlock new upgrades which transform combat and movement.