So it turns out Nikoli's Suraromu can be done in DROD quite easily without scripting, and probably to a non-trivial size. Maybe I'll do something with this if I ever learn how to make that sort of puzzle well or adapt other stuff that RuPaul missed, but for now have a proof of principle. Take the mechanism for your own work if you like.
EDIT: also Aisuban, using a lemming but no other scripting. Somewhat more fiddly.
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[Last edited by Dischorran at 11-01-2016 02:04 AM]