This is the official list of rules for levels and allowed objects
Creator rules:
Scaling/warping IS allowed
only the default background and ground may be used, no middlegrounds allowed
any songs are allowed
no platformers
ship/cube allowed
no use of hide or notouch
Verification/Completions
CBF allowed
Physics Bypass not allowed
LDM is allowed
All levels must be completed on the OFFICIAL level, no copies
Footage is required for every completion/progress
All completions require click sounds to be audible, barely audible clicks will NOT be accepted
Do not skip the endscreen after a completion
Show info label MUST be enabled (can be disabled but may take longer to be accepted)
Completions recorded using an external camera (liveplay) are not allowed
Use of secret ways for verification or completions are NOT allowed