Really fun game. But like the other commenter said, a hint would be nice, that you have to press e to get through the door or interact with things. :D
I had a lot of fun especially with the jumping left and right passages
I realise now that I could've gone ahead and added prompts during the 3 hours I had spare and it probably wouldn't have taken that long. The change of color/face during flipping, for instance, was added after initial submission. No reason prompts couldn't be as well.
Hindsight is a cruel thing indeed.