Love love love this game. The puzzles were a good mix of easy ones and fairly complex ones. Nothing that can't be solved thru perseverance and many retries, though. You can definitely finish without purchasing additional hints. What I love the most is how straightforward it is. This in comparison to other 5bn games in which you'd have to keep visiting multiple locations making it too convoluted to enjoy sometimes. I like the gameplay of this better. Looking forward to its next versions.