A beautiful, happy, delightful game of friendship and accomplishment. My pals and I just recently finished all available levels and have never felt so fulfilled since we started gaming together. It's very simple in concept, but so very fun in execution. The thought that gets put into every puzzle, every secret, every finish has thought and importance. Sound and music isn't common in the game, but the subtle sound effects are funny (such as bumping your head on a plank) and the music that does play is always great. My favorite is "Sail Away" from the Water level. We're going to be diving into custom levels shortly and plan to replay all the main levels with a few more friends in the near future to discover all the stuff we missed. I would definitely recommend playing this with friends over playing solo, it enhances the experience to work as a team in this game. I've heard joining random servers doesn't make for the best experience, although I can't speak for that as we've only played in ours (which does get guests time-to-time who we will play with unless they're asshats who sabotage). 100% recommended experience. Here's a video from our series we're doing on the game, this one of us playing the end of Aztec and the beginning of Dark:

https://www.youtube.com/watch?v=kxweMYqG6kQ