Subnautica 2 starts testing on May 14 with 5 million wishlists

Subnautica 2 will enter Early Access on May 14 via Steam, with developer Unknown Worlds also confirming that the game has now passed 5 million wishlists on the platform. After multiple legal disputes between the studio and its former publisher, that matters almost as much as the date itself: this underwater survival adventure, set on an entirely new alien world, is no longer just a concept. It is finally reaching a playable stage.

For a survival-builder, the real measure usually starts around the 120-hour mark, when base expansion, tool progression, and repeated map runs begin to reveal what the game actually is. What makes Subnautica 2 especially compelling is not just the sequel number, but the decision to shift the setting to a brand-new alien world while supporting both solo play and co-op for up to four players. If you are the kind of player who wants to strip every trench layer for secrets, that setup has obvious pull.

The other concrete signal here is that Steam wishlists have surpassed 5 million. In the survival-adventure space, that is well beyond simple curiosity. It feels more like the accumulated demand for this kind of deep-sea game finally breaking the surface. Combined with the fact that the project has made it through repeated legal disputes and still reached its Early Access milestone, it suggests development is continuing in a meaningful way rather than being completely derailed by outside pressure. For cautious players, that is important.

The visual upgrade also looks like a major part of the pitch. Subnautica 2 is being built in Unreal Engine 5, and the current information points to improvements in water rendering, lighting, creature model detail, and the physics simulation system. The original takeaway is straightforward: overall visual quality appears to be significantly better than in the previous game. That matters for an underwater title, where the fastest way to break immersion is making the ocean feel like a giant swimming pool or letting creature textures fall apart up close. If this sequel can really sell the pressure of the deep, the glow of alien ecosystems, and the layered lighting of player bases, the atmosphere should land much harder.

On the gameplay side, the biggest question is how co-op will serve exploration. With support for up to four players, base building, tool crafting, and splitting up to scout different areas should all become smoother. In practice, that opens the door to natural role division inside a group: one player handling resource routes, one focusing on the equipment tree, another pushing into unknown territory. If the balancing is right, co-op could become one of the game's strongest hooks rather than a mere feature bullet.

Still, Early Access is Early Access, and that label alone is enough to make completionist players hesitate. The common issue for survival-building games at this stage is not that they are bad, but that their content boundaries are still moving. Base layouts, resource loops, and even story pacing can all be reworked later. If you care a lot about doing a full, one-and-done clear and uncovering every hidden area in a single run, it makes more sense to wait for community feedback on content volume and overall completion. If you actively enjoy learning a game while it evolves, though, diving in on May 14 may deliver the purest version of that unfamiliarity.

What stands out in this announcement is that the selling points are attached to concrete, checkable anchors rather than vague promises: May 14, Steam, four-player co-op, and Unreal Engine 5. For a game that has already gone through legal disputes, that level of clarity is a signal in itself. At this stage, Subnautica 2 no longer feels like an attractive concept poster. It looks like a real attempt to send players back into a beautiful, dangerous alien ocean.