How to make Mario levels, by negative example Sept 1, 2015 6:22:20 GMT -4 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by dlevere on Sept 1, 2015 6:22:20 GMT -4 Posted by JHarrisHere's a list of things not to do in your Mario levels, consider it advice for when Super Mario Maker comes out in a week and a half. Also, here's things not to do in your Mario overworld. They both come from the rom hacking community at SMWCentral.