Changing the screen colour irritates the eyes :(

pretty good

The changing nature of the action button seems to be the core gimmick of this game, but it's not very well explored. I suppose that's to be expected with unfinished games however.

As others have noted, saying that space is the action button would help a lot

And a nitpick I have is that I wish you simply couldn't interact with black walls, since this implies that there are hidden things you can find by interacting with walls, and is just generally annoying to have to deal with every time you accidentally press action while facing a wall. It's not at all necessary anyways.

This game need some improvements. It does not tell you how to use the action button or where you need to go.

WHAT IS THE ATCTION KEY???