As special agent Robert "Rip" Steel, you're tasked with taking down the evil Yellow Shadow's network of undersea mining bases while defending your own. You'll be in command of a small but powerful submarine, requiring quick thinking and strategic planning to outmaneuver your enemies.
The gameplay revolves around exploring the ocean floor, detecting enemy mines, and destroying them before they can cause harm. You'll also need to protect your own bases from attack, using your submarine's capabilities to fend off incoming threats. With a focus on tactical decision-making and resource management, Project Neptune challenges you to balance short-term goals with long-term strategic objectives.