The brothers spent months designing the Ages comprising the game,[19] which were influenced by earlier whimsical "worlds" Cyan had made for children's games.[20] The game's name, as well as the overall solitary and mysterious atmosphere of the island, was inspired by the book The Mysterious Island by Jules Verne.[3] Robyn's unfinished novel, Dunnyhut, influenced aspects of Myst's story,[21] which was developed bit by bit as the brothers conceptualized the various worlds.[21] As development progressed, the Millers realized that they would need to have even more story and history than would be revealed in the game itself.[20] Realizing that fans would enjoy getting a deeper look at the story not in the games, the Millers produced a rough draft of what would become a novel, Myst: The Book of Atrus.[21]