If you’ve booted up Steam Subnautica 2 for the first time, you’ve probably already had the jarring experience of watching your escape pod sink, hearing distant leviathan roars, and realizing you have exactly three oxygen tanks and a pocket knife to keep yourself alive. The sequel amps up every part of the original’s tense underwater survival loop, with bigger biomes, more dangerous creatures, and a darker, more layered story that unfolds as you dive deeper. It’s easy to make avoidable mistakes in your first 10 hours that set you back hours of progress, so we’ve pulled together our top tested tricks to help you thrive instead of just barely surviving.
Master Your Oxygen Management Before Diving Deep
Oxygen is your most precious resource in the game, and even a small miscalculation can leave you drowning meters from the surface with a full inventory of rare materials. Most new players make the mistake of waiting until their oxygen bar hits 20% to turn back, but that doesn’t account for unexpected obstacles like aggressive creatures or hidden cave networks that block your path up. Always start heading back to the surface when you have 30% oxygen left if you’re exploring unmarked areas, and add an extra 10% buffer if you’re carrying rare crafting materials you don’t want to lose. You can craft extra oxygen tanks early on using titanium and coral tube samples, and equipping two will double your dive time without weighing you down too much.
Essential Early-Game Crafting Priorities for New Players
You don’t need to craft every available tool in your first few hours, but skipping a few key items will make your playthrough far more frustrating than it has to be. We recommend sticking to this priority list for your first 5 hours of gameplay:
- Standard O₂ Tank: Doubles your base dive time and only costs 2 titanium and 1 silica pearl, both easy to find in shallow biomes
- Scanner: Lets you unlock blueprints for every piece of gear and base structure in the game, plus scan creatures to learn their weak points and behavior patterns
- Survival Knife: Useful for defending yourself against small aggressive creatures, harvesting coral, and cutting through vine barriers blocking cave entrances
- Portable Crafting Table: Lets you craft basic items on the go without returning to your escape pod, a game-changer for long exploration runs
How to Avoid and Defend Against Hostile Creatures in Steam Subnautica 2
The alien ocean is full of creatures that want to eat you, and most new players don’t realize that almost all of them can be avoided if you know their behavior patterns. The small, fast biters that hang around shallow kelp forests only attack if you get within 3 meters of them, so you can swim past them safely if you give them a wide berth. Larger predators like sand sharks will chase you for short distances, but they can’t keep up with you if you swim straight up toward the surface as fast as possible. Never attack a leviathan unless you have fully upgraded weapons and a reinforced dive suit – even a single hit from most leviathan variants will take out 80% of your health, and they will chase you for hundreds of meters if you aggravate them. If you do spot a leviathan in the distance, turn off your headlamp and swim slowly behind a rock or coral formation until it swims away, they almost never spot stationary players that are out of their direct line of sight.
Unlock Fast Travel Points Early to Cut Down on Commute Time
One of the most annoying parts of mid-game play is swimming back and forth between your base and distant biomes to drop off materials and pick up crafting supplies. Most players don’t realize you can unlock fast travel beacons as soon as you get the scanner and find 3 copper ore, 2 titanium, and 1 quartz. You can place these beacons anywhere in the map, and you can warp between any two placed beacons for a small cost of 1 crystalized sulfur each trip. Place your first beacon right outside your base, and add more at the entrance to every major biome you discover – this will cut down hours of wasted swim time over the course of your playthrough. You can also label beacons with custom names and colors to make it easy to find exactly what you’re looking for, whether that’s a deposit of rare lithium or the entrance to a hidden story cave. You can even place hidden beacons near leviathan spawning points to warn yourself away from dangerous areas on future dives.
At the end of the day, Steam Subnautica 2 rewards curiosity more than it punishes mistakes, so don’t be afraid to venture into unmarked areas as long as you come prepared. Even if you end up drowning or getting eaten by a leviathan, you’ll learn something new about the map or creature behavior that will make your next run easier. Use the tips we’ve shared here to avoid the most common early-game pitfalls, and you’ll be exploring the deepest, most secret parts of the alien ocean in no time.
