Marines is a beginner-tutorial-style top-down shooter that puts you in control of a masked marine under constant attack. Enemies rush toward you from all directions, forcing you to aim quickly and stay mobile. With a left-click of the mouse, you can build walls to block enemies, slow them down, or create strategic cover. Shooting, movement, and smart wall placement are the keys to survival. The longer you last, the tougher the enemies become. Can you withstand the assault and survive the battlefield?