“Sounds – possibly musical – heard in the night from other worlds or realms of being.”
H. P. Lovecraft
Eversion? What this sickeningly cute crap is doing here?…
If “not intended for children or those of a nervous disposition” warning did not clued in, then maybe Lovercraft reference at beginning will. Plot is as simple as “princess is kidnapped – you must save princess”. Graphics is very retro. You are cute flower that have to gather all gems. You somehow have powers of titular eversion, that is, moving in different versions of same reality. Eversion works only in certain places and you will recognize them by changed music and colors being slightly off. Eversion is needed to beat almost all levels and to get all gems, as some level objects have different properties in different realities (for example, clouds can become solid).
The longer you play, the more creepier game becomes, as realities evert in more and more dark direction. It slides from happy-go-lucky faces to completely neutral expressions at fourth version to… something worse. I love this contrast. Game have bad ending (when you finish without all 240 gems), and good ending that is, uh… good. I mean, they love each other and live happily ever after, right? Right?