Deep Crafter Beginner Guide: Survive Your First 10 Hours Underwater

I crashed on the ocean floor with 3 minutes of oxygen and no idea what I was doing. Six deaths later, I figured out what actually matters in Deep Crafter. This isn't Subnautica — you're not just surviving, you're building a factory.

The First Thing You Need to Understand

Deep Crafter is a factory automation game that happens to take place underwater. The survival elements are the gate, not the game. Your real objective is production chains. If you treat it like a pure survival game, you'll spend 20 hours hand-mining resources while the game's systems are screaming at you to automate.

I wasted my first 3 hours picking up copper by hand. Don't do that.

Your First 30 Minutes

The tutorial drops you at the Abyss Research Station on the seabed. You're Dr. Mia, sent 15 light-years from Earth to this ocean-covered alien world where Earth's magnetic field is collapsing and humanity needs a new home. The station gives you a basic O2 tank, a scanner, and a copper pickaxe.

Here's what I'd do if I could start over.

Don't stray far from the station. The immediate area has copper and iron nodes on the seafloor — gray-green rocks with orange veins. Mine about 30 copper and 20 iron. That's enough for your first real tools.

Craft a Basic Constructor (opens your crafting menu via the inventory tab) and build:

• Copper Drill (mines faster, uses less oxygen per swing)

• O2 Tank Mk1 (adds 60 seconds to your oxygen — this is the single most important early upgrade)

• Scanner Mk1 (shows mineral deposits through terrain up to 20 meters away)

That scanner? Use it constantly. Toggle it every 15-20 seconds while moving. The terrain looks the same everywhere down there, and without the scanner you'll swim right past titanium deposits thinking they're regular rock. I did exactly that for my first two hours.

Where to Build Your First Base

The station is your safe zone but it's not a good permanent spot. Resources are thin at the starting depth. I moved my base to about 80-100 meters deep, in a flat area near a thermal vent.

Why thermal vents? Free power. Geothermal generators are the earliest scalable energy source and they run 24/7 unlike the surface solar panels which produce half output at depth. A single thermal vent can power your first 5-6 machines — I ran three miners, two smelters, and an assembler off one vent for my first 15 hours.

When picking a base spot, look for three things:

• Flat seafloor (at least 8x8 foundation tiles, trust me you'll expand faster than you think)

• Within 50 meters of a thermal vent

• Near at least two different ore types (iron and copper both in scanner range is ideal)

Don't build near lava vents. The heat drains your O2 about 40% faster and Lava Worms start spawning after the 200m mark. I learned that one the hard way — lost a whole storage container of gold ingots.

Your First Production Line

This is where the game clicked for me. Instead of hand-crafting everything, you want machines feeding machines.

The simplest chain: Miner drills copper ore → Conveyor belt → Smelter → Conveyor belt → Storage container.

You need about 40 iron plates and 20 copper wire to build your first Miner + Smelter + 15 conveyor segments. That sounds like a lot but it's maybe 20 minutes of focused mining with the Copper Drill.

Once this line is running, you stop mining copper by hand. Entirely. You go explore while your base produces. That's the moment Deep Crafter stops feeling like a survival grind and starts feeling like a factory game. It's genuinely satisfying watching those little ore chunks slide down the belt into the smelter.

Oxygen Management Actually Explained

Every action burns oxygen at different rates. The game doesn't surface these numbers anywhere, so here they are:

• Swimming slowly: 0.8/sec

• Sprint swimming: 2.2/sec

• Mining: 1.5/sec

• Using the builder tool: 1.0/sec

• Combat: 2.5/sec

Your O2 tank determines how long you can stay out. But here's what actually matters more than tank size: building O2 refill stations at key depths. A Mk1 tank with three refill stations along your route gives you more effective range than a Mk3 tank with no stations. I didn't figure this out until hour 30 and I'm still annoyed about it.

Craft O2 Candles too. They're cheap (1 biogel + 1 crystal shard) and give you a 30-second oxygen burst. I carry 4 on every expedition. They've saved my inventory more times than I can count.

What Kills Beginners (And How to Avoid It)

Running out of oxygen at depth is death number one. When you die, your inventory drops where you died. You get one life to retrieve it before it despawns. I lost 2 hours of titanium farming this way and almost uninstalled.

The fix: always know where your nearest O2 refill station is. If you're going deeper than 200m for the first time, build a refill station at 150m on the way down and another at your destination. Yes, it costs resources. It costs less than losing your entire inventory.

Death number two: hostile creatures. Abyssal Stalkers show up around 150m. They're fast, aggressive, and they swarm in groups of 2-3. Don't fight them with a pickaxe — you'll lose every time. Build a Harpoon Gun (8 iron + 2 copper wire) as soon as you can. One shot to the head drops most Stalkers. Miss and you're in trouble though, the reload time is brutal.

Death number three: base power failure. If your geothermal generator runs out of fuel or your power grid overloads, your O2 refill station goes offline. I came back from a 30-minute expedition once to find my base completely dark and my refill station dead. Had 12 seconds of oxygen left. Made it by about half a second. Install a Battery Buffer — it stores excess power and kicks in during outages. Costs 20 copper + 10 gold. Best insurance you'll ever buy.

Your First 10 Hours Checklist

Don't try to do everything. Here's the order that got me through:

• Hour 1-2: Tutorial, basic tools, scout a base location

• Hour 3-4: Build first base, geothermal power, O2 refill station

• Hour 5-6: First automated production line (copper plates)

• Hour 7-8: Expand to iron smelting, build Harpoon Gun

• Hour 9-10: Push to 200m depth, find gold and ruby deposits for O2 Mk2

One Last Thing

The tech tree has 100+ nodes and it's easy to get lost. Focus on the left side — that's the automation branch. Faster miners, longer conveyors, splitters, mergers. The more you automate, the less you grind. The right side (combat gear and personal upgrades) matters, but not until you've got a factory running.

I spent my first playthrough upgrading my oxygen tank and harpoon while hand-mining everything. Second playthrough I rushed automation. By hour 10 my factory was producing 200 copper plates per minute without me touching a single ore node. That's the difference between struggling and actually enjoying the game.