Loved this game! I downloaded it and printed it out before a long Amtrak trip, and this was the perfect puzzle book to occupy my time. I've been into rule-discovery Metroidbrainia games, and while this game does lay out most of the mechanics for you, there are still some secrets to discover! Also, some of the puzzles were quite hard and had me erasing my whole page multiple times as I tried to solve them! I loved that it combination of descriptive story narrative pages, branching puzzle paths, and and unique mechanics. It was a challenging and fun experience that I would definitely recommend to fans of games like 12 Word Searches, LOK, and Abdec. Also, the fact that it's free is so generous! I would gladly pay money for this game. I hope that we get more games in this vein someday!