Kingdom Conquest (Japanese: キングダムコンクエスト, Hepburn: Kingudamu Konkuesuto) is a massively multiplayer online game strategy game with incorporated city-building, card collection and third-person action gameplay elements, developed and published by Sega for iOS and Android devices in 2010.

A sequel, titled Kingdom Conquest II, was released in Japan in December 2012, and worldwide in January 2013.

In Kingdom Conquest, players must manage a kingdom in the world of Magna, building and upgrading facilities, managing resources, and collecting Monster Cards that can be drawn from randomized Card Packs.

In this way, players must vie for control over areas of the map, with the ultimate goal of conquering Debris Towers, enormous Spires filled with Monsters.

The game is split into seasons, each of which lasts until control over the debris towers is settled and one Alliance has emerged victorious.