Recent dream had me playing what was supposed to be an arcade version of Muse Dash, while it had the same characters with new character variations (at least for Rin, didn't see the others), the gameplay was nothing like the actual gameplay and was instead a vertical lines going down-type rhythm game. For some songs, various characters and images would show up on the notes, I remember pixelart Vocaloid(?) characters and heads of some cartoon characters I think were made up for the dream
Glitchy Bootleg Lasers