yep~
and 2 and 3 are from the Monochrome path, to monochrome feudal japan, 22 is smile san and a bunch of other things from other worlds sorta badly drawn in paint, 23 is visine world, 25 is the red fire-tree from the scenic outlook event, etc.
the only thing i can think of that 20 looks ALOT like is a box from the MC desert in yume nikki, which takes you to a pretty cool area full of eyeball people.