Guardian of Hidden Land is a dedicated puzzle hack for Pokémon Mystery Dungeon: Explorers of Sky. The gameplay mostly consists of 8-floor puzzle dungeons, interrupted by short intermissions. There is a fully integrated system for skipping and replaying puzzles, and plenty of hints!
Join Lapras and the Time Gear guardians on an adventure near-forgotten by time itself, to prevent an unknown cataclysm from coming to fruition in the distant future! Furthermore, the hack is a prequel to the base Explorers of Sky plot, and is intended to be in the same canon as the base game. That said, the events of this story take place a long time before the base plot! Some characters have changed drastically in this time!