Indirection I will say, I found this demo very challenging. You take the puzzles into a very claustrophobic and dynamic ambient room littered with portals and switches. Everything about figuring out which direction you need to go and when to push the button, made me bawl when I accidentally hit the lava mound at the very end of the last level. Being restricted to move only one direction REALLY makes you more concerned if you're heading the right direction or ultimately going to have to restart. The last level took me around 20 times, most of it being that I lost a lot of progress in what I initially would come to understand at the very end.
An overall experimental and interesting concept, it isn't trying to be complex in its controls but putting it into puzzles, mind you. The switches and portals are what make you switch places and that's a really good way of doing it without having a blank wall and bouncing back.
I'll see if I can pick this up on Steam~
