For some reason, the second area in the first fortress (with the falling spikes/ceiling) is now completely stationary. Where exactly can I see/set this option? Any ideas?
Thanks in advance.
If you've deleted all of the enemies, you've lost the Autoscrolling enemies that are below Y: 026 that cause the up-down movement. Using a hex editor (for example, the one in FCEUXD or WindHex32) go to 0xD361 in the ROM and reinsert the Autoscrolling enemies if you want the up-down movement back. Probably the easiest way to do this is to have two hex editors open; one with the original SMB3 ROM and the other one with the SMB3 ROM you are modifying, and simply copy and paste the necessary bytes.