On seed 67 (don’t ask) using default settings, one level in World 3 (3-2 I believe) was presumably an SMB2 US level and it takes you to a screen with garbage data and instant death… had to use the cloud item to skip it. Also, possibly because of the world map camera bug, World 4 isn’t beatable because the bridge to the castle doesn’t spawn. Perhaps you already know this, but World 8 “hands” levels will take you to the vanilla SMB3 level it’s normally assigned to if the hands get you, and the proper randomized level by entering it normally