Which of the following games has the largest map size?

Just Cause 2 has the largest map size among the following games because it features a vast open-world environment that spans over 400 square miles of land and sea. The game's fictional island of Panau offers a diverse range of landscapes, including cities, villages, jungles, mountains, and deserts, providing players with ample opportunities for exploration and chaos. With its massive map size, Just Cause 2 offers players an extensive playground to experience its action-packed gameplay, including the use of grappling hooks, parachutes, and various vehicles, making it the game with the largest playable area.