Unknown Worlds Entertainment starts development of the video game Subnautica, focusing on underwater exploration and survival.
Subnautica is released on Steam Early Access, allowing players to try the game and provide feedback while development continues.
Subnautica is officially released on PC, completing the early access phase and offering the full game experience.
Subnautica is released for Xbox One, expanding its audience to console players.
Subnautica becomes available on PlayStation 4 platforms.
A sequel entitled Subnautica: Below Zero is released on Early Access, continuing underwater adventure themes with new environments.
Subnautica: Below Zero officially launches, providing a complete experience as a sequel to Subnautica.
The spaceship Aurora crashes on an alien ocean planet, 4546B, after being shot down by a mysterious energy pulse.
The player character escapes the Aurora in a life pod and lands on the planet's ocean surface, beginning survival and exploration.
Exploration and scanning of the Aurora crash site reveal the ship's condition and provide resources for survival and tech upgrades.
Player encounters the aggressive Reaper Leviathan, one of the largest predators in the game.
Player obtains blueprints for key survival tools such as the Scanner, Repair Tool, and Habitat Builder from fragments and data boxes.
Player constructs the Fabricator, enabling creation of essential items from collected materials.
A long-range radio transmission is decoded from another lifepod, providing clues about the planet and other survivors.
Player locates and explores the Degasi lifepod, learning about the fate of previous survivors.
Player meets the ancient Sea Emperor Leviathan in the Lost River and learns that it is key to curing the planet's disease.
Player synthesizes and injects a cure for the Kharaa bacterial infection using Sea Emperor larvae enzymes.
The player repairs a communication device on the Aurora to send a distress signal for rescue.
A rescue ship arrives and extracts the player from the planet after successful communication and cure.
