"Tower Behind the Moon" is a 400,000-word interactive epic fantasy novel by Kyle Marquis. It's a text-based game without graphics or sound effects. The story is about a mage named Kyle, who is the greatest wizard in the Sublunar World. He is a rare conjunction of a powerful sorcerer and a powerful wizard, which makes him unique among the gods. He is a combination of both the magic of the gods and the magic of the sorcerers, which gives him the ability to do things that no one else can. He has to choose between two paths, which will lead him to either immortal glory or to the destruction of the world. He has to fight against various enemies, including the gods, the demons, the sorcerers, and his own students.