Players can choose from nine different girls and nine different robots to form a team of three.In the apocalyptic world, you have to face endless monsters. Now pick up your weapons and start fighting! You must choose the right girl and robot to form a unique team to complete different challenges. Find and discover the truth of world destruction and ways to save the world. Strive to survive, evolve, find the cause of the world's destruction in the midst of gunfire and bullets, and strive to save the world from monsters!