I was expecting to enjoy this game for a bit of fun, but it ended up being one of my favorites of all time.

Pros:
- Puzzles are fun and challenging.
- Graphics are good and the worlds are very pretty to look at.
- Philosophical elements of the narrative are very well-integrated to the rest of the game and the story.
- Voice acting (where it exists) is solid.
- Story is very unique and unforgettable.
- Soundtrack is beautiful and relaxing.

Cons:
- Some of the puzzles are a little too challenging. But that's all part of the fun!

If you like puzzle games, particularly those similar to Portal and Portal 2, this game is an absolute must-play.