The game was released in March 2010 for Microsoft Windows, PlayStation 3 and Xbox 360. It was announced in 2007 with a demo attracting two million players. Avalanche Studios worked with Square Enix London Studios while developing Just Cause 2. Panau, inspired by Southeast Asia, was considered by the team a good location for an action game. As a result, mission design, artificial intelligence and most core gameplay mechanics were overhauled. The game was developed as an improvement of Just Cause its team saw missed opportunities in the first game, analyzing and refining it. These points are essential for story progression. Just Cause 2 introduces the Chaos System, in which players must complete missions and destroy government property on Panau for Chaos points. The gameplay involves Rico fighting hostile militants with guns and a grappling hook, enabling players to tether objects to each other and slingshot into the air with a parachute. It features Rico Rodriguez, a major operative of the fictional Agency who arrives at Panau (a fictional dystopian island nation in Maritime Southeast Asia) to overthrow dictator Pandak 'Baby' Panay and confront former mentor Tom Sheldon. The sequel to 2006's Just Cause, it was powered by Avalanche Studios' Avalanche 2.0 Engine. Just Cause 2 is a 2010 action-adventure game developed by Avalanche Studios, published by Eidos Interactive and distributed by Square Enix.