Subnautica

After crash-landing on an alien ocean planet, you must find food and water, manage your oxygen, and develop equipment suited to a dangerous underwater world. Exploration leads through coral reefs, kelp forests, sunlit plateaus, glowing reefs, volcanoes, and cave systems, where friendly and hostile creatures share the environment. Clues scattered across the ocean point toward the planet’s past, the cause of the crash, and the possibility of escape.

The core loop combines scavenging, crafting, and increasingly deep exploration. Collect nearby materials, then venture farther to locate rarer resources for more advanced tools and survival equipment. You can construct bases for shelter and pilot submarines while adapting to the hazards around you. Survival mode preserves the full pressure of hunger, thirst, and oxygen management, while Freedom removes those needs and Creative lets you explore without those survival demands. Across these modes, the underwater setting supports discovery as much as resource gathering, with environmental variety, wildlife, vehicles, base building, and a mystery that unfolds through exploration.