A game by nifflas for PC, PS3, Vita, and Wii U, originally released in 2012.
Knytt Underground presents the story of a young female sprite named Mi who is fated to prevent the end of the world by ringing 6 bells. The girl is unable to speak, but she meets a pair of fairies early in her adventure that speak for her. After the world above was destroyed by war, the creatures from the surface moved underground, and the entire game takes place within the confines of an elaborate cave system, made up of over 1,800 interconnected screens. The floor, walls, and ceiling are solid black, but most of the backgrounds are detailed and colorful, with the background imagery and ambient effects changing based on the region of the cave system.