In the "starly girls x G Gear x space next-generation training simulation" game, the player assumes the role of the captain of the super-gravity-cruising ship Asterism. With the vice captain and the Hoshimusu ("Starly Girls"), the player controls the special mobile weapon G Gear (Gravity Gear), "defies the fate of the cosmos, and restores the twinkling of the stars."

(Source: Anime News Network)