In METAL SLUG 4, a cyber-terrorist group has unleashed an international computer virus with the goal of hijacking the world's militaries. Join Marco, Fio, and new METAL SLUG team members, Trevor and Nadia, as they try to stop the distribution of the virus before it's too late.
* Take the battle to the air, sea and land as you once again battle Morden's forces
* Six challenging stages and a wide array of unique enemies
* Famous non-stop, fast paced MEATL SLUG action
* Play as returning favorite characters Marco and Fio or brand new characters Trevor and Nadia
* Extensive power-ups of over-the-top weaponry, health and ammo
* Fight off huge boss characters on each level and battle massive end bosses