Summoners War: Sky Arena is a mobile turn-based strategy massively multiplayer online game created by South Korean game developer Com2uS. Players assume the role of a summoner, opening scrolls in order to acquire monsters to fight in turn-based battles. Summoners War has been released in 2014 for iOS and Android devices and has surpassed 200 million downloads worldwide by 2018. In 2020 it had a crossover with the Street Fighter series, adding characters Ryu, Chun-Li, Ken Masters, M. Bison, and Dhalsim as monsters to the game.