Subnautica Below Zero is an adventure game developed and published by Unknown Worlds Entertainment. The game was released in 2021 for Xbox One and Xbox Series X. It is a sequel to the popular game Subnautica and takes place in an open world on a frozen planet where players have to survive by gathering resources and avoiding dangerous creatures. The game contains an exciting act with several ends and a variety of tools and vehicles that players can use to explore and survive in this frozen world.