ExZeus

In 2102 C.E., a giant asteroid enters Earth's orbit, and inside is a horde of aliens led by the entity Diadora, unleashing an invasion on mankind. Hiding deep underground, the surviving rebels create three experimental robots, Sophia, Calista and Dynamis, to combat Diadora's army, the objective codenamed "Operation ExZeus". These three robots are humanity's last hope. ExZeus is an on-rails arcade...