Other games containing impossible spaces:
* Hyperbolica - https://store.steampowered.com/app/1256230/Hyperbolica/ - Allows you to navigate a non-euclidean world. Good luck staying oriented.
* Miegakure - https://store.steampowered.com/app/355750/Miegakure/ - Not yet available, but the videos are interesting. You navigate in a 3d'ish space, but can also modify time.
* echochrome - https://en.wikipedia.org/wiki/Echochrome - What is real in this world depends on how you rotate it. A bit similar to FEZ (https://store.steampowered.com/app/224760/FEZ/)