Earth Defense Forces 2 takes place 3 months after the Invaders war. Mutations started in England; upon receiving the SOS call from London, our heroes flew in to investigate. Instead of the elegant city, all they sees are ruins and large insects rampaging what remains of the buildings. Join the EDF force, pick up your firearms and battle the monsters and aliens that infest the planet. The Sony PSP game incorporates new elements, gameplay options and an adhoc network mode which allows 4 gamers to play together.