Metal Slug 6 returns to the Rebel-Martian alliance featured in Metal Slug 2, X, and 3, but on a much broader scale. With help from the Rebels, they rescue the captured Martians and succeed in destroying the Invader King. However, it is soon revealed that the Martians themselves are being invaded and eaten by a new dangerous race of aliens called Invaders and they have turned to Morden for help.Īs the Invaders invade Earth's cities, the soldiers fight them off and chase them into the desert, where the Invader King has established a nest. After destroying their latest war machine in a long hillside battle, the six soldiers confront Morden and discover that he has rebuilt his alliance with the Martians. Together, they proceed into the mountains where Morden's Rebel Army has established an outpost. Marco Rossi and Tarma Roving of the Peregrine Falcon unit reunites with Eri Kasamoto and Fio Germi of SPARROWS as the quartet is ordered to investigate Morden's latest plan, being joined by two new allies named Ralf Jones and Clark Still of the Ikari Warriors.

One month after the events of Metal Slug 3, the threatening presence of General Morden looms over the world once again.

Metal slug 6 plus