The game's title stands for "Exact Skeleton," which refers to the giant exoskeleton/mech you control in this Japanese action shooter from Kiki (formerly Mig Entertainment). Exa Skeleton is set in the year 2022. You star in the role of Joe Graham, pilot of the Immortal Gunfight Category 1 (IG-1) mech who enters a brutal survival sports league. Get behind the controls of the hulking battle machine and try to survive the onslaught of wave after wave of skilled contestants. Upgrade your mech with new parts as you progress further in the game.