I originally bought this game on Steam, and I've played it all the way through. It's a unique and fun puzzle game. So, I decided to also grab a copy on GOG so I could own it forever. However, as soon as you open the game, you are forced to accept a EULA that claims that you do not own the game, but rather a revocable license to the game. As mentioned by another reviewer, it also allows the company to collect all sorts of personal data about you. This is likely a lot of boilerplate they apply to all their games, but frankly it's unacceptable. I do not agree to those terms, so I have requested a refund. If this company wants to sell on GOG, they need to follow GOG's principles.