Subnautica is an expansive underwater adventure set on an alien ocean planet, challenging players to survive and uncover the mysteries of the deep. After crash-landing in your Life Pod, the only way forward is down, guiding you through oceans ranging from sun-drenched shallow coral reefs to treacherous deep-sea trenches and lava fields. This survival experience requires players to scavenge for resources, craft essential equipment—from knives and lights to advanced diving gear and personal water craft—and manage vital supplies like oxygen and food. Players must construct underwater habitats on the sea floor, managing hull-integrity as depth and pressure increase, using these bases to store resources and replenish oxygen. As you explore, you will encounter a vibrant, dangerous ecosystem. The ocean teems with life, demanding that you learn to use the environment, whether by luring predators with fresh fish or navigating the complex food chain. The challenge intensifies as you venture deeper, exploring cave systems below the sea bed, which range from dark passages to caverns lit by bio-luminescent life. Furthermore, the environment is unforgiving, especially after nightfall, when predators become more active. To survive the extreme depths, players can build a Pressure Re-Active Waterproof Nanosuit (PRAWN Suit), which can be modified with advanced tools like mining drills, torpedo launchers, and propulsion cannons. The narrative drives the player to uncover the truth about the planet, the cause of the crash, and the mysterious structures scattered throughout the ocean. Subnautica: Below Zero continues this journey, setting the story one year after the original, challenging players to survive in icy biomes both above and below the surface. The game emphasizes exploration, resource gathering, and building comforts of home while unraveling the next chapter of the mystery on Planet 4546B.