Underwater

Subnautica is a survival action-adventure game set in an open world environment and played from a first-person perspective. The player controls the lone survivor of the crashed spacecraft known as The Aurora, Ryley Robinson, as he is stranded on a remote ocean planet known as 4546B. The main objective is to explore the ocean and survive its dangers while completing tasks to advance the plot. Players can collect resources and blueprints, construct tools, build bases and submersibles, and interact with the planet's wildlife. Some of the most extreme dangers to the player include but are not limited to: Crabsquids, Warpers, Mesmers, Bonesharks, Ampeels, Stalkers, Crashfish, and Leviathan-class lifeforms like the Reaper, Sea Dragon and Ghost Leviathans. The majority of the game is set underwater, with two explorable islands, and a simulated day-and-night cycle that affects visibility, along with an eclipse that happens frequently. Upon beginning a new game, players are given an option between four difficulty modes: In survival mode, the player manages their depleting health, hunger, thirst and oxygen. If the player dies, they respawn, but certain items are removed from their inventory. In freedom mode, gameplay is near-identical to that of survival mode, but without hunger and thirst. In hardcore mode, gameplay includes permanent death. If the player dies, they do not respawn, and its save file is instead permanently deleted. Additionally, the player does not receive warnings of low oxygen levels as in other modes. In creative mode, all depleting characteristics, such as health and thirst, are removed. All blueprints are unlocked, allowing players to craft without the need for resources. Additionally, the player starts with a stasis rifle, a Seaglide, a mobile vehicle bay, and a propulsion cannon. All items, base structures, and vehicles do not require an energy source to operate, and vehicles are immune to crush depth. The game supports VR headsets, such as the HTC Vive and the Oculus Rift, with the additional inputs of a keyboard and mouse or game controller.