eFootball Pro Evolution Soccer (eFootball PES), known as eFootball World Soccer Winning Eleven (eFootball WE)[a] in Japan, is a series of association football simulation video games developed by Konami Digital Entertainment Co., Ltd. and published by Konami. The series consists of eighteen main installments and several spin-offs, including the mobile game Pro Evolution Soccer Club Manager. Listed as one of the best-selling video game franchises, the series has sold 111 million copies worldwide, in addition to 400 million mobile downloads, December 2020.[1] Pro Evolution Soccer was regarded as a rival to the EA Sports FIFA series;[2] it has been described by The Guardian as the "greatest rivalry" in the history of sports video games.[3] An esports league, eFootball.Open (previously named PES World Finals or PES League), has been held by Konami annually since 2010. As the successor to the PES series, Konami released eFootball in 2021.