Leap of faith.

While the game does make use of some optical illusions it doesn't make itself an integral part of the puzzle. This is mostly because the puzzles have been about the physics of the world more than the illusion of how do you manipulate the physics so all the pieces of the puzzle where you want them. The physics nature of it does lead to some awkwardness, especially when you're trying to get a key around the outside of a curve. Tilt too much and the key falls off into the ether and too little and it doesn't move at all.

I also wish that the character movement and the tilting was just a little bit faster. My annoyance with puzzles games is when you know the solution but it takes far too long to execute it. I feel like if the character was just a little bit faster it would have alleviated that problem I had with it. Unfortunately as with any about physics and puzzles that would probably affect the solutions to some of them so here I am instead just complaining about it.