Thrown into the futuristic Earth devastated by the invasion of the Zeon forces, players will find themselves caught in the crossfire between the Earth Federation and Zeon forces nine months into the conflict. At the brink of annihilation, the Earth Federation Forces are mobilizing to launch a massive counter assault against the occupying forces. Call for arms have been made. Players will be given a choice to either join the Federation Army to repel the invaders from the Earth or pledge their alliance to Zeon to claim the Earth! By piloting the ultimate mechanized weapons of the future taken straight from the Gundam Universe (Mobile Suits) players can suit up and command fellow battalion Mobile Suits in the fight to change the tides of the war.

Inciting the memories of bitter rivalries between the Federation and Zeon forces from the popular franchise, Mobile Suit Gundam: Crossfire places pilots into the cockpits of numerous legendary Mobile Suits and launches them right into the heat of battle. Teamwork and brilliant leadership are crucial in ascertaining enemy weaknesses and locating strategic enemy facilities on the battlefield. New commanders have access to a variety of Mobile Suits available for enlistment into their battalion and more suits will open up as players progress further in the game and complete objectives in the war effort.