In 2013, a Kingdom Hearts online mobile game called "Kingdom Hearts: Fragmented Keys" was in development that never saw the light of day. The game was rumored to feature customizable avatar characters, like the later mobile game Kingdom Hearts Union χ [Cross], but would also have been in 3D instead of Union Cross' 2D art style. From the available concept art, the game was planned to feature several returning Disney worlds including Agrabah, Wonderland, a Lilo & Stitch Hawaii world, Space Paranoids/The Grid, London/Neverland, and Dwarf Woodlands. It also included worlds that didn't appear in the series yet but would appear in later games like Union Cross and Kingdom Hearts III, such as Arendell (Frozen), Kingdom of Corona (Tangled), and Niceland/Game Central Station (Wreck-It Ralph), and most surprisingly, a world based on the Star Wars franchise, although this world's chronology is unknown as concept art show different conflicting eras. In one image, the characters Anakin, Obi-wan, Padme, and Yoda appear in their exact looks from the "Star Wars: The Clone Wars" movie and series in a separatist gunship's hanger, as well as a planet that looks similar to Tatooine and an anachronistic Death Star power station room. It is unknown why this game was cancelled.