The fact that this level's designs are pretty ordinary does ironically make it feel much more disturbing

Phenomenal theming. Everything — the song, the gameplay, the deco, the mildly unnerving atmosphere — really drives home the point that something's not quite right. I like that there's some text in some parts to help tell the story, and the repetition of all the different motifs, such as the eyes and the number 3, helps everything feel united.