This is really more than a bit good, isn’t it? I mean, it’s a bit like Mario 64 in that each level has to be completed multiple times to get different treasures in different ways, but obviously in 2D. And it’s more puzzley. But the idea is still the same.
I’ve collected about half the treasures so far, and opened up quite a few levels meaning I was wrong with the 4-levels-per-world statement in my last post. At least one world now has 6! I only have 2 or 3 (it’s difficult to tell on the screen) bits of the musical box though.