The latest installment of the greatest air combat game series soars onto the PSP system with an arsenal full of ground breaking new features! ACE COMBAT JOINT ASSAULT pushes the PSP system's capacity to its limit with robust online gameplay, a CO-OP enabled campaign mode, and a new strategic AI system. The new Joint Assault Mission System� enables you to work through different maps simultaneously and effect each others' tactical situation, allowing the missions to evolve in multiple branches. Players will step into the shoes of allied pilots and set out on numerous original missions to obliterate the enemy in fierce tactical dogfights.