htoL#NiQ: The Firefly Diary is a visually striking but challenging puzzle-platformer where players guide a girl named Mion through a dangerous, post-apocalyptic world using light and shadow mechanics. The game, often noted for its somber tone, tells a silent story of survival and loss that critics praised for atmosphere while citing its precise, demanding controls as a potential frustration. htoL#NiQ: The Firefly Diary Reviews - Metacritic