Made this in a weekend back in October 2022 for Beans Game Jam 2 (theme: "a real dream") as a way of getting familiar with puzzlescript. It was pretty fun! Realized I never uploaded it to itch, oops.
This game mechanic came to me in a dream back in like 2016 (yeah, really). I think it's a pretty cool/elegant mechanic, and I am still contemplating expanding it into a 3D puzzle at some point, as there's probably more to explore here.
Hint for level 4 if you can't work it out: jung unccraf vs gur gjb punenpgref raq hc gbhpuvat rnpu bgure?