THE NEVER-ENDING ELEVATORYou know, like in Stage 4-3 of SoR2?
Too Deep?
I haven't seen any mention of building one of these, but it is possible.
I got one working just now. :3

You need to set the stage scroll type to 'Elevator'.
Anything else and you'll get stuck with an eternal go symbol by the end of the scene. You don't want that.
Layer 1 needs to be...
360 width
Minimum 512 height
It's best to have an image that's 360x256 that can loop forever with no graphical seams if you placed it one atop the other, and then double it vertically. 360x128 also works (that's the size used in 4-3) - just quadruple it.
You need to animate your image moving up (or down) yourself.
For a 360x128 image, that's 8 .png files, each one shifted up/down by 16 pixels.
For a 360x256 image, you want 8 .png files, each shifted by 32 pixels.
This will create a perfect looping animation of the walls forever moving up or down.
Well if I animate it myself, why does it need to be 512 height? Isn't 240 enough?In an Elevator stage, you have to make the elevator event trigger at some point, or else you'll be stuck in the scene forever.
That would be bad.
Basically, when Round 2 shows up, you decide whether you want your elevator moved slightly faster or slightly slower for a while.
It's best to stick move speeds of about 1 or 2, otherwise the combination of movement speed and animation can make crazy things happen for a split second.
If you want, though... and you want to terrorize our vigilantes... you could do move speed 10 and have the characters say in a cutscene afterwards how they thought the elevator was gonna break down, get stuck, crash, or whatever.
An elevator where the walls are
animated moving up will go...
...slightly faster if set to 'Move Up'.
...slightly slower if set to 'Move Down'.
For the same reason, the neverending elevator's animation speed should be 1 or 2 ONLY (3 or more produces choppy animation).
Note that 1 is insanely fast, and will mean the elevator travels a loooooong way.