I'm offering a 50$ bounty if someone can find a new warp on the SNES version. Conditions: It has to be recreatable, save time in a run, and has to be in a new spot, not an improvement of another warp. The bounty is up for one new warp, no multiples.
Some guesses where new warps might be found:
- at the beginning of Wharf: some combination of the bridge reappearing, wrecking balls both on screen and getting hit, throwing marbles, collecting items
- Steps: jumping on and/or hitting butterflies with marbles while getting hit
- Library: some combination of getting hit, throwing marbles at enemies and collecting marbles
Just a tiny correction, it seems you need to press jump exactly 2 frames before Mickey would have grabbed the rope. And for the Mad Doctor zips I find it works best if you immediately let go of the jump and right button as soon as you get the zip. For the zip on Haunted Halls you'll need to do it from a specific position (you can see that in any of the recent top runs here) and keep holding jump after getting the zip to get into the stairs. And for the warpless category there's also a zip on Dungeon 2: , here you'll also want to keep holding jump after the zip.
Good luck with the zips, and if you've got any more questions, feel free to ask here or on the Discord!