Dragalia Lost is a mobile action role-playing game developed and published by Cygames. It was released in Japan on September 27, 2018, and worldwide on September 27, 2018. The story follows the prince of Alberia, who must team up with dragons to save his kingdom from an evil force. Players take control of the prince as he embarks on an adventure with his dragon allies to save Alberia from destruction. Along the way, players will explore dungeons, fight monsters and bosses, collect loot and materials for upgrading weapons and abilities, and build relationships with their dragon companions. The game features both single-player and co-op multiplayer modes where up to four players can join together in battle.