Tip: Switch palace switches normally disappear if you replay the level. However, if you insert them as direct Map16 and use the hex-edit at $00EEB2 in the ROM map, you can replay the level without a problem.
not a long review, but i'm gonna say that i enjoyed playing this demo! i would definitely love to see a finished version, though i imagine that would be unlikely. also, i want to raise the rating of this hack higher than 3.9.
i think 1-3 is the best level in the bunch, and 1-4 is pretty clever in how it was built.