It's indeed an awesome game with a very great atmosphere. You'll find more great atmosphere at the top of the tower.
I saw another one of your QR codes at the base actually. The Talos Principle. It's like Portal but instead of charming/dark humour you get Greek philosophy. To illustrate: Cola's thought-provoking quote comes from earlier in the game where you get asked about conciousness, and are asked what separates you from a frog. This is one of the responses you can give.
May I ask, is that version 99.31.0030 of Cola Colin? If so, I'm worried about what they are putting him through! And how he can be a partial revision...