Thank you for the feedback ! So, the idea of the game is not really just a bunch of looping random puzzles. You actually have a lot more control over the levels than you think. That's why there are levels that are impossible to solve normally. The clue is on the second room on your first playthrough which says "Your actions will be watched". I was trying to give a hint without making it too obvious, although I definitely made it too vague and it's not conveyed well enough on the levels since most people didn't realize it. As for the heart cube, it's actually a little easter egg from Portal. It's supposed to be a Companion Cube.