Incredible concept, you mentioned Antichamber which I haven't played yet but this use of perspective reminds me a lot of Superliminal. If only the game was longer and explored the mechanic more...!
It's a lot like superliminal! I actually have yet to play that game, but I remember thinking the demo was so cool.
And I definitely want to make a longer demo, this is my first time doing 3d modelling so hopefully cranking out levels will be easier once I get into a groove for it