Shooter with a good plot, which is a very rare case. It all started with the return of people expelled from the solar system. They attacked Earth and its outer outposts. The Earth Defense League brought their best forces against the exiles - units of mechs (giant walking war machines controlled by people). The battle began on Ganymede (satellite of Jupiter), where the detachment was stationed, in which the main character was. Before the mission, the player chooses which weapon he will take with him on the mission, and if at first he does not have to choose, then after five missions he will already have to break his head, deciding which of the trophies to take and which to leave. In combat, the player is assisted by allies, who in some cases are almost useless, and sometimes do most of the work. Fights take place not only on the surface of the planet, but also in space, while weapons, which was effective on the planet may not perform well in space, and vice versa. The missions themselves are closely related and tell the player an interesting story.