htoL#NiQ: The Firefly Diary is a puzzle-platformer video game for the PS Vita. In it, players take control of Mion, a young girl with amnesia who is lost in a labrynthine ruin. Players must use the touch controls to guide two fireflies - one light and one dark - as they lead her through the maze and its two worlds, Light and Shadow. On their journey, they will have to solve puzzles and explore different environments while avoiding obstacles that stand in their way.