Hello! Long time lurker, first time poster here on the community forums. I hope this is okay to post and ask about.
I remember playing a game that I found here a long time ago. It was a first person, 3D game where you're in a gallery of sorts, and looking at each picture on the walls brought you into the scene in the picture.
It was a puzzle game in that your goal once you're in the scene is to get back out - the twist is that no shadows are rendered, so if a wall and the floor are the same colour, you can't tell where the floor ends and the wall begins. I think the term for it is "flat shading?" But this was the unique mechanic.
I remember in the first level (the first painting you encounter and enter), you have to take a step up to reach the exit door. But you can't see the step you have to jump over because of the flat shading style.
I played it on Mac.
I remember that you can jump, I don't remember if you can sprint.
Hoping that someone will be able to help me out! Superliminal just came out recently and that's got me thinking of all the cool puzzle games with interesting mechanics, haha. Cheers!
EDIT: I have found the game, it is called Beyond Perception. Thank you to everyone who helped me!