What I find interesting about The Witness is that it has different layers to it that all fit together. Some spoilers ahead. On a surface level you explore the

What I find interesting about The Witness is that it has different layers to it that all fit together. Some spoilers ahead. On a surface level you explore the world, find puzzles, and solve them. On the next level is the scenery. There are visual perspective curiosities (e.g. the man who's shadow is juggling, or the statue with the tree forming a tentacle-like body). Then there are the meta-puzzles -- telegraphed at the top of the mountain -- for you to find and complete. On the next level are the audio devices and the windmill. These cover different aspects of science, philosophy, and religion, but all on the same overall theme -- the sense of discovery, identity, and what it means to be human and to be a witness of life and the world around us. This builds to a kind of meta-commentary of the game, but also to an interesting outlook on life.