Power Challenge Holdings Ltd. is a developer and publisher of browser-based multiplayer sports games based in the UK. Initially founded in Sweden as ManagerZone AB, the company changed name to Power Challenge when it expanded its portfolio of games in 2005 to include both ManagerZone and Power Soccer. The company also became known the same year for bringing a 3D game client to ManagerZone, being the first to do so with a web-based football management game.[1] Both ManagerZone and Power Soccer make use of micro transactions, but offer users the option to play free of charge.
Today, Power Challenge Holdings Ltd. owns a group of companies, namely Power Challenge AB (which in turn owns Power Challenge Sweden AB) and ManagerZone AB. The privately held company is funded by Benchmark, Israel and IQ Capital, UK, and has employees based in New York, London, Italy, and Sweden.