Operation Just Cause, covers the US invasion of Panama in 1989 that went by the same name. You can fight as either the Panamanian Defence Force (PDF) and its paramilitary elements or as the U.S. Armed Forces.

All the Teams, weapons, vehicles, and most of the sounds and graphics have been changed from the original game. Research for the mod started in the summer of 2006 with v0.9 being released on December 24, 2006, four days late for the 17th anniversary of the invasion. Version 1.0 took another eight months to complete, v1.0 first being sent out for testing on August 19, 2007. The final version, v1.1, was released on September 2, 2008.