Subnautica 2’s Buddy System Fixes the Worst Part of Co-Op Survival

Co-op survival games keep pretending that dropping a battery on the floor while your friend drowns nearby counts as teamwork. Subnautica 2 has finally addressed that nonsense. The Buddy System update, live in Early Access 1.2 as of August 19, gives multiplayer groups proximity voice chat, revives, direct inventory trading, tracking tags, and a handful of non-verbal tools for when a teammate is too busy panicking to explain what killed them.

This is a bigger deal than the emote wheel makes it sound. Unknown Worlds has spent this patch tackling the boring-but-crucial friction between players: finding each other, sharing supplies, recovering from a bad dive, and communicating when somebody has wandered into the dark with one oxygen bar left. That is the actual co-op loop. The creatures get the trailers; logistics decide whether a session becomes a disaster story or a productive expedition.

Proximity chat turns separation into a real survival problem

The headline feature is cross-platform proximity voice chat. Nearby players sound clear and directional. Move apart, and the audio shifts toward a radio-like signal before progressively breaking up. It is a smart fit for Subnautica 2, where losing visual contact in a cavern or during an open-water detour is rarely a harmless mistake.

Players can set voice chat to always on, push to talk, or always off. Groups should decide that setting before the first serious dive. Always-on audio makes quick warnings effortless, but it also means everyone hears keyboard clatter, breathing, and the one friend eating directly into their microphone. Push to talk is cleaner, though it adds one more button press at exactly the wrong moment.

The important part is the gradual degradation. A hard voice cutoff would be a nuisance. The radio effect gives teams a warning that formation has broken before they are completely isolated. Unknown Worlds calls this the first iteration of proximity chat, which is sensible language: the feature’s success will depend on its range, mix, reliability, and how it behaves under pressure — not on the novelty of hearing a teammate become a distorted ghost in the distance.

Revives and direct trading remove the dumbest co-op failures

Buddy System adds player revives. A downed diver can be brought back before reprinting at their assigned Biobed, retaining their equipment and recovering a small amount of oxygen. They can also choose to reprint immediately. That creates an actual rescue decision instead of turning every small shark encounter, food failure, or oxygen mistake into an automatic equipment-recovery chore.

Unknown Worlds has not laid out every edge case — revive range, interruption rules, item requirements, and timers remain the questions that matter — but the design direction is right. Co-op needs recoverable mistakes. A survival game still gets to be dangerous when it gives friends a narrow window to save a run.

Trading gets the same practical treatment. Teammates close to one another can access each other’s inventories directly to exchange items, avoiding the ritual of dumping supplies into the sand and hoping the right person picks them up before the current carries everyone into fresh trouble. The patch does not publish a full item-by-item trading list, so groups should test their usual emergency supplies — oxygen-related gear, food, batteries, medical items, and tools — before assuming every handoff works the same way.

The Tracking Tag is the small addition that may save the most runs

The Tracking Tag functions as a short-range beacon, and it can be placed in carryable storage such as a portable locker or inside containers. It also extends the Black Box signal if a player has the tag in hand or inventory when they reprint. That is exactly the kind of humble utility feature co-op games need more of.

Use one to mark a resource cache. Put one in a portable locker before a longer expedition. Treat the tag as cheap insurance against the classic early-access co-op failure: three players confidently claim they know where the base is, then spend ten minutes swimming in different directions. The patch does not provide exact tracking range or every container interaction, so test it near home before treating it as a deep-expedition lifeline.

Emotes are silly until the radio goes bad

The new radial emote menu includes Wave, Clap, Thumbs Up, Thumbs Down, and Frustrated. Players can use them in water or on land, and gameplay input interrupts the animation. Nobody needs to pretend these gestures are revolutionary. They are, however, useful when voice chat is fading, when a teammate has muted their mic, or when “thumbs down” communicates the state of a cave entrance faster than a shouted explanation.

Buddy System also adds two character options, Jegna and Grace, plus two new suit color schemes. Fine additions. Personalization is welcome in a multiplayer game, but the real value of this update sits in the systems that keep a shared expedition moving after somebody makes a bad call.

What co-op groups should test first

• Walk and swim apart in a safe area to learn how quickly proximity audio fades and when the radio effect becomes hard to understand.
• Choose always-on or push-to-talk before a deep run, rather than debating microphone etiquette after someone is downed.
• Trigger a revive situation near a Biobed and learn the difference between waiting for help and immediately reprinting.
• Practice direct inventory exchanges with the supplies your group uses during emergencies.
• Place Tracking Tags in a portable locker and a container, then see how easily everyone can recover those locations after splitting up.
• Check whether opening the trade and emote interfaces creates enough friction to matter while swimming, building, or escaping danger.

The next update has to prove the work is reaching the whole game

Anthony Gallegos and Unknown Worlds are also working on the next Early Access update, which is set to bring a new region, story and progression content, and new vehicles. Buddy System is the multiplayer usability pass that had to happen first. Building more places to explore means very little if a group cannot reliably communicate, regroup, share gear, and recover from a wipe once it gets there.

Unknown Worlds also donated $100,000 to The Ocean Cleanup alongside the update. A worthwhile gesture, but players will judge Buddy System by a much simpler standard: whether the next time a friend says “I found something,” the group can find them, hear them, and get them home alive.