Unknown Worlds Entertainment has released the official early access gameplay trailer for Subnautica 2, and with it comes a concrete launch date. Players on Xbox Series X|S and PC will be able to dive into the sequel’s alien ocean starting May 14.

The trailer, which shows actual early access footage, confirms several features that fans of the original have been waiting for. Subnautica 2 remains an aquatic survival adventure exploration game at its core, but this time you can bring friends. The trailer emphasizes cooperative play as a central new pillar, something the original Subnautica never offered.

Plunging into the depths of an alien world, players will build underwater bases, craft and use a variety of tools, and uncover mysteries that have been dormant for a long time. The trailer shows a player constructing a habitable structure on the seafloor, scanning alien flora, and piloting a submersible vehicle through a vast, creature-filled water column. The sense of unease that defined the first game appears to carry over, with unknown shapes moving in the darkness beyond the reach of your hand-held light.

Unknown Worlds has positioned Subnautica 2 as a cooperative experience from the outset. While the original Subnautica was a strictly single-player game, the sequel opens the ocean to multiple survivors working together. The early access trailer shows two players swimming side by side, sharing resources, and building a base together. The exact player count for co-op was not specified in the briefing, but the trailer strongly suggests that small teams will be able to explore the world simultaneously.

Base building returns with what appears to be an expanded toolkit. The trailer shows modular room pieces, windows, a fabricator, and power sources. Players can place structures on the ocean floor, and the game seems to retain the style of snap-together segments from the original, but with new aesthetic options. Tools visible in the trailer include a scanner, a repair tool, a propulsion cannon, and what looks like a new knife. The variety of equipment suggests that survival will require more than just oxygen management — environmental hazards, aggressive wildlife, and resource scarcity will all play a role.

Exploration remains the primary driver. The alien planet in Subnautica 2 is a fully underwater world with no land above the surface shown in the trailer. Coral reefs, deep trenches, thermal vents, and underwater caves create distinct biomes. The trailer cuts between a kelp forest area, a sandy plain with wreckage, and a pitch-black abyss where only the submersible’s headlights pierce the dark. Mysteries take the form of alien structures and data terminals, as well as the wreckage of previous expeditions.

The early access model means the game will not be complete at launch. Unknown Worlds did not specify exactly which features will be missing on May 14, but the company previously released the original Subnautica in early access and kept updating it for years. That approach proved successful: the game launched as a tight survival loop that gradually expanded into a narrative-driven exploration title. Subnautica 2 appears to follow the same philosophy, releasing with core mechanics intact and adding story content and additional biomes over time.

Platform availability is limited to Xbox Series X|S and PC, with no mention of PlayStation 5 or Nintendo Switch in the briefing. The PC version will be sold on both Steam and the Epic Games Store. Early access buyers on either storefront will receive the game as it evolves, with all future updates included in the purchase price. No pricing was announced.

The choice of May 14 places Subnautica 2 in a relatively quiet part of the release calendar, avoiding major blockbusters. That strategy worked well for the original, which built a loyal audience during early access before becoming a commercial and critical hit. Unknown Worlds has a track record of listening to community feedback during early access, and the briefing notes that the trailer itself represents actual early access gameplay, not a vertical slice built for marketing.

Subnautica 2 arrives five years after the original Subnautica left early access, and about three years after the standalone expansion Subnautica: Below Zero. The sequel appears to combine the survival depth of the original with the narrative polish of Below Zero, while adding the key new feature of cooperative play. For players who found the isolation of the first game unnerving, the option to bring a friend could change the game entirely. For those who loved that isolation, the game will presumably still support single player, though the briefing does not confirm that explicitly.

What remains to be seen is how the game handles shared progression, building, and death in co-op. The original game had a strict save system and no respawning mechanics. If the sequel allows multiple players to build in the same world and save together, that alone will be a meaningful change.

Unknown Worlds has not announced how long the early access period will last, or when a full version 1.0 launch is expected. For now, the trailer gives fans a clear look at what the game will feel like on day one: the same tense, beautiful underwater exploration, now shared with others.

The early access launch on May 14 on Xbox Series X|S and PC (Steam and Epic Games Store) gives players a concrete date to circle. The trailer makes it clear that the deep is calling again, and this time you don’t have to go alone.