Just Cause 4 is an action-adventure video game developed by Avalanche Studios and published by Square Enix. Released in December 2018 for Xbox One and other platforms, it is part of the Just Cause series known for its expansive open-world gameplay. Players assume the role of Rico Rodriguez as he traverses the fictional South American country of Solís to combat the Black Hand, a private military organization. Featuring a dynamic weather system with tornados and storms, the game continues the franchise's tradition of allowing players to explore and cause chaos using a variety of weapons and vehicles.