Survival

🌊 Subnautica

Survive an alien ocean planet with biome notes, blueprint priorities, base-building checklists, and safer depth planning.

🗺️ Key Biomes

Each biome changes what you can safely craft next. Use biomes as progression markers, not just scenery.

Your opening supply loop. Gather Quartz, Limestone, bladderfish, and basic blueprints before pushing outward.

Essential for Creepvine samples, seed clusters, and early fragments. Watch for Stalkers while farming materials.

A strong early-mid biome for Sandstone outcrops, wrecks, and vehicle progression fragments.

Safer than it looks and excellent for scouting fragments and higher-value outcrops once you have transport.

Blood Oil leads into deeper progression. Treat these zones as gateway regions once oxygen and vehicle upgrades are secure.

Late-game territory. Bring heat resistance, power planning, and a clear goal because this is where mistakes become expensive.

Subnautica gets much easier when you tie every deeper push to a specific vehicle or upgrade milestone instead of diving blind.

Focus on O2, fins, a scanner, a repair tool, and dependable food and water. This is your setup phase.

Seaglide and Seamoth carry most of the midgame. Wreck scanning and signal chasing matter more than raw exploration distance.

Depth modules, better power storage, and a tougher resource loop become mandatory. Prep before entering Lost River routes.

Late-game zones reward deliberate trips. Enter with spare power, medkits, food, and a narrow crafting objective.

Blueprints unlock by scanning fragments, and the fastest progression comes from prioritizing mobility, safety, and crafting reach in that order.

Seaglide — Early mobility beats almost every other first upgrade.
Mobile Vehicle Bay + Seamoth — Strongest midgame power spike for scouting, storage, and safe travel.
Scanner Room — Speeds up repeat material farming and removes a lot of blind searching.
Cyclops Fragments — Start scanning them before you can build the full sub so the late game does not bottleneck.
PRAWN Suit — A major jump for deep biome confidence and heavy-material gathering.
Endgame Crafting — Leave final story hardware until your depth, power, and supply chains feel stable.

A small reliable base solves more problems than a giant pretty one. Build for repeatability first, then style later.

Pick a location with easy access to the Shallows, Kelp Forest, and nearby wrecks.
Secure power, storage, Fabricator access, and a reliable water loop before expanding rooms.
Build a Scanner Room once you are repeating material runs often enough to justify it.
Add indoor or outdoor growing space once food stops being a quick foraging task and starts wasting time.
Use beacons aggressively so your base, wrecks, cave entrances, and resource routes stay organized.

You do not need to win fights in Subnautica. You need to recognize danger early, avoid panic movement, and keep your escape route obvious.

Use the edge of a biome and listen before committing. If visibility is bad, slow down and check your exit path.

Do not carry your whole economy into high-risk zones. Short, purpose-built trips reduce the sting of mistakes.

Radio beacons and wreck markers are progression tools. They are usually safer and more valuable than random deep wandering.

If a zone feels hostile, the answer is often better depth, power, repair planning, or vehicle support rather than bravery.