Originally, Disney was developing a sequel entitled Shards of Chaos, but it was abandoned once The Lost Empire was less successful than anticipated. Atlantis: Milo's Return (also known as Atlantis II: Milo's Return), released in 2003, is Disney's twentieth animated direct-to-video sequel. It is a sequel to the 2001 animated film Atlantis: The Lost Empire. Atlantis: The Lost Empire is a 2001 American animated science-fantasy action-adventure film created by Walt Disney Feature Animation, marking the 41st entry in Disney's animated features canon and its first science-fiction film.Written by Tab Murphy, directed by Gary Trousdale and Kirk Wise, and produced by Don Hahn, the film features an ensemble cast with the voices of Michael J.