Played the demo for Object Impermanence and rather liked it. The basic conceit is that certain things in the world (mostly Orbs) only experience the passage of time when you're looking at them, so you have to do perspective tricks to solve puzzles with them
store.steampowered.com/app/4330960/...
A first person puzzle game where your vision defines reality, and only the things you can see exist. Learn and master the strange behaviours of objects outside your vision. Traverse the ancient struct...