Just Cause 4 is a action-adventure game developed by Avalanche Studios and published by Square Enix. It is the fourth game in the Just Cause series and the sequel to 2015's Just Cause 3 and is scheduled to be released for Microsoft Windows, PlayStation 4, and Xbox One on December 4, 2018. Just Cause 4 is a third-person action-adventure game set in an open world environment. The player assumes the role of series protagonist Rico Rodriguez.
The game is set in a fictional South American country called Solis. Rico Rodriguez takes on the Black Hand, the world's most powerful private army run by Gabriella Morales, a newly introduced character. The Black Hand served as a mercenary group to dictators Salvador Mendoza of Just Cause and Sebastiano Di Ravello in Just Cause 3. When Rico is shown evidence that his late father was working with The Black Hand, he plunges into the South American nation of Solís, the homeland of the Black Hand in search of answers.