These are all levels that were not created by the developer and used in the game. Some of them did not become levels and were instead used as Infinite mode levels (which is why they are not on this list).

An entire tunnel, the Coordination Challenge, is dedicated to fan submissions from the (RfC) Creator Contest 3/19/18-5/19/18, which was added in the update on August 5th.

All items (54)

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