Factorio: Beginner's Guide & Best Tips

The Real Talk About Factorio

Yeah, Factorio can be brutal at first. Here's what nobody tells you: the first 10 hours are basically a survival horror game where the monster is your own supply chains. You start with a pickaxe, a furnace, and the vague sense that you're about to do something very stupid. And you probably will.

I've got 2,400 hours in this thing. I've launched rockets, I've built megabases that churn out 10,000 science per minute, and I've also spent an entire Saturday trying to figure out why my iron plates stopped flowing (spoiler: one belt was rotated 90 degrees). This game is the most addictive thing I've ever touched, and it's also the most punishing. The factory must grow, but it will also kick your teeth in when you're not looking.

What makes it special? The dopamine loop. When you finally get green science automated, and you watch those belts flow into the labs, and the research queue starts ticking? That's a high I've never gotten from any other game. But the lows are real too — running out of coal in the middle of the night because you didn't check your miners, and suddenly your entire base is dark and starving. You learn fast or you restart.

What's annoying? The biters. Not the biters themselves, but the fact that you'll spend three hours designing a perfect smelting array, and then a group of spitters roll up and eat your power lines because you forgot to expand your walls. The late-game UPS optimization is a beast too — you learn to hate inserters that could be replaced by direct insertion.

This guide isn't for the guy who's already launched 50 rockets. It's for the person who just got crushed by a biter nest, or the one who's been hand-feeding iron plates for six hours and wondering why this game is so popular. Yeah, I've been there. Let me help you skip the worst of the pain.

Why Players Struggle

Can't beat the first boss? Wasting all your resources? Here's exactly what to do.

The "first boss" in Factorio isn't a boss — it's the moment when your iron patches run dry and you realize you set up your entire base on a deposit with only 50,000 ore. The panic is real. Your furnaces go silent. Your ammo belt stops. The biters notice. Everything falls apart.

This happened to me on my third save. I had a beautiful little bus going, four lanes of iron plates, everything hand-tiled. Then the ore ran out. I didn't even have a train system yet. I spent two hours running back and forth with a car full of ore while my base slowly starved. I ragequit and didn't touch the game for a month.

Real struggles I see in new players constantly:

• Scaling too fast, too early. You see someone on YouTube building a 16-lane bus and think you need that. No. You need a single lane of iron plates to reach blue science. Anything beyond that is showing off.
• Not using the map. The map actually tells you where resources are. I've seen people build their main base in a desert with no trees, then complain about pollution. The map shows you forests. Go build there.
• Hand-crafting everything. I did this for my first 40 hours. Your hand-crafting queue is always full and you're spending minutes waiting for gears. Build an assembler for gears. One single assembler. It will change your life.
• Ignoring the main bus concept. You don't need a perfect bus, but you need something. I wasted so much time spaghetti-ing belts in every direction. A simple bus of iron, copper, steel, and green circuits will carry you to the rocket.
• Not automating ammo. This is the #1 killer of new bases. You think "I'll just hand-craft some magazines" and then an hour later the biters are eating your boilers because you forgot. Automate yellow ammo on your bus. Two assemblers. Done.

The biters are a wake-up call. They show up when your pollution cloud hits their nests. That's the game's way of saying "build more turrets." If you're fighting them with just a submachine gun and no armor, you're going to die. I've died to a group of three small biters because I thought I could melee them. You can't. Build turrets. Build walls. Automate repair packs.

Getting Started / First Steps

Here's what I actually wish someone told me before I started playing, instead of the YouTube tutorials that assume I've already built a megabase.

Hour 1-3: The Survival Phase

Don't build anything permanent. Seriously. Your first base is going to be trash and that's fine. Focus on three things:

• Put your miners on the iron ore first. Not copper. Iron. You need gears, plates, and eventually steel. Copper is for later. Iron is life.
• Build one furnace column for iron plates and one for copper plates. You don't need a huge array yet. 12 furnaces per side will do.
• Hand-craft enough red science (5-10 packs) to research automation. That's it. Don't try to scale red science yet. Just unlock the ability to put things in assemblers.
• Place all your boilers and steam engines near water. I once built my power plant half a map away from water because I wanted it "near the base." It was a nightmare. Water is a hard requirement.

Hour 3-10: The Automation Phase

This is where most people mess up. You've got assemblers now. You think "bigger is better." It's not. Here's the plan:

• Build a main bus with 4 lanes. I do iron plate, copper plate, steel plate, green circuits. Later you add red circuits, blue circuits, and plastic. You don't need 12 lanes. You need 4.
• Automate yellow ammo early. Two assemblers feeding into a chest. Take the chest output and put it on a belt around your base perimeter. Trust me on this. I've lost three bases to biter attacks because I thought "I'll do it later."
• Automate inserters and belts. Don't hand-craft these. One assembler for belts, one for inserters, one for undergrounds, one for splitters. Feed them all from the bus. You will use thousands of belts.
• Red science should be automated with 5-10 assemblers. Feed gears and copper plates. That's literally all red science needs. Drop it in a lab. Start researching.
• Green science is the first real test. You need inserters and belts. Automate inserters (they need green circuits and iron gears). Automate belts (they need iron gears). This is the first time you'll need to think about ratios. 12 green science assemblers is a good start.

Hour 10-20: The Train Era

Your starter iron patch is going to die. Maybe it's already dead. That's fine. This is why we have trains.

• Don't build a 20-train network. Build one train. One locomotive. Two cargo wagons. Run a track to a new iron patch. Set up miners there. Load the train. Bring it back to your base. Unload it. Done.
• Signals are confusing. I still mess them up sometimes. The key rule: chain signal before an intersection, rail signal after it. That's 90% of train signaling right there.
• Make the train stop at your base with a stack inserter pulling from the cargo wagon into a chest, then onto a belt. That chest acts as a buffer. If your train is late, you have 2,000 plates in the chest to survive on.

If you get this far, you're past the newbie wall. Biters are manageable. Your bus is flowing. The factory is growing. Now we get into the deep stuff.

Expert Tips & Tricks

These are the things you only learn after sinking 100+ hours into the game. Stuff that the tutorial doesn't mention and that YouTube guides skip because they're too busy showing off their 10,000 SPM megabases.

1. The Flamethrower Turret is broken OP.

People sleep on these. The Flamethrower turret does 45 base DPS but it ramps to 120 DPS after 3 seconds of continuous fire because of the damage-over-time stacking. A single flamethrower turret with a wall of piercing ammo turrets will hold off late-game behemoth biters. The trick is the oil. You need to pipe light oil or heavy oil to them. I run a dedicated underground pipe from my refinery to the wall. It's a pain to set up, but once it's running, your walls are basically invincible. The flamethrower turrets also set the ground on fire, which confuses the biter pathfinding. I watched a group of 30 biters walk into a wall of fire and die before they even reached my first wall.

2. Ratios are your religion. Learn them.

The game is a math problem dressed up as a factory. If you don't respect the ratios, your belts will clog and your base will starve. The critical ones for early game:

• 1 offshore pump : 20 boilers : 40 steam engines. That's the power ratio. 1 pump will feed 20 boilers (each boiler needs 1.8 water/s, and a pump gives 1200/s). Check me on that. I've built it wrong before and wondered why my power died.
• Copper cable to green circuits: 3 copper cable assemblers to 2 green circuit assemblers (cable:circuit ratio is 6:1 but moduled it changes). Don't belt copper cable. It's a waste of belt throughput because each cable takes up a full belt slot. Direct-insert the cable from the assembler into the circuit assembler.
• Red circuit production: 1 plastic : 2 copper cable : 4 green circuits. That's the recipe ratio. Scale it accordingly.

3. Build with space. You think you have enough room. You don't. I build my scaffolding, my initial base framework, and then I realize I need 4 more furnaces and there's no space. I learned to leave at least 4 chunks of space between each section of my bus. Not 2. 4. You will thank me later when you need to add a new product line and you don't have to tear down your entire base.

4. Construction robots are not optional. You need to research construction bots as soon as you have blue science. The personal roboport is the single best item in the game. I can blueprint a 100-furnace array and have it built in 30 seconds. Before construction bots, I spent hours placing each individual assembler. It's the difference between playing Minecraft and playing a RTS. Get the robots up. Personal roboport Mk2, 50 bots, and you're set for mid-game.

5. Solar is a trap in the early game. I know the internet loves solar. "Clean energy, no pollution, set and forget." That's true at 500 panels. But at 10 panels? It's useless. You need a massive array (and the accumulators to go with it) to replace a single steam engine setup. For the first 50 hours, use steam. Coal is plentiful. Later, when your pollution cloud is huge and you need to reduce your power footprint, switch to nuclear. Solar is a endgame flex, not a midgame solution. I've seen people try to run their entire base on 40 solar panels and then wonder why their machines are idle at night. Don't be that person.

6. Blueprinting is the secret to speed. Every time you build something clean — a smelting column, a circuit factory, a train station — save it as a blueprint. I have a blueprint book with 40 designs. I can stamp down an entire green circuit factory in 10 seconds. I can copy my train station blueprint and paste it at a new ore patch. It turns a 2-hour task into a 10-minute task. The game literally has a blueprint system. Use it.

Common Mistakes to Avoid

I've made every single one of these. Some of them multiple times. Learn from my pain.

Mistake 1: Building your bus on top of your starting ore patches. I built my first main belt bus directly over the iron patch I started on. Then I realized I needed to mine that iron. I had to tear down half my base. Your starting patches are temporary. Don't build permanent structures on them. Leave room for miners.

Mistake 2: Not having a buffer. Your smelters produce at a certain rate. If your factory stops using plates (because science is full), the belts back up. That's fine if you have storage. If you don't have storage (like a chest or a buffer), the furnaces stall and then when you suddenly need plates, they have to ramp up from zero. This kills your throughput. I put steel chests at the end of every bus lane. They act as a physical buffer. If production exceeds consumption, the chest fills. If consumption spikes, the chest drains. It smooths out all the hiccups.

Mistake 3: Building one-way belts everywhere. You don't need a belt for each item type going in every direction. I used to build a belt for iron plates, one for copper plates, one for steel, all running parallel to each other. That's a bus. But then I needed to send some plates to a different area and I'd build a separate belt. No. Use splitters. A splitter takes one belt input and splits it into two equally loaded belts. That's how you distribute resources: bus -> splitter -> new belt -> wherever it needs to go. Keeps your base clean.

Mistake 4: Forgetting that biters evolve based on pollution. Your pollution cloud triggers biter attacks. But the biters also evolve — they get bigger and stronger — based on three factors: time, pollution generated, and nests destroyed. If you rush destroy nests early (before you have good ammo), you're making them stronger faster. The trick: let the nests be unless they directly threaten your base. In the early game, you can sometimes run with minimal defenses if you keep your pollution cloud small (by having fewer machines or using efficiency modules). I once played a game where I never destroyed a single biter nest until I had uranium ammo and power armor. It was trivial.

Mistake 5: Not using the ALT key. This is the #1 quality-of-life tip. Press ALT to toggle on overlay mode. It shows what each assembler is making, what each chest is storing, and what each train stop is called. Playing without ALT is like driving a car blindfolded. I physically feel anxious when I see someone on YouTube who hasn't pressed ALT. It's the first thing I do when I load a new save.

Mistake 6: Building too close to your first iron patch. You need that iron patch for miners, not for your main base. I see new players drop their furnaces right next to the ore patch. That's fine until the patch runs out, and then they have a huge factory that's in the way of the new ore patch. Leave a buffer zone of at least 50 tiles between your base and your first resource patches. You'll need the space later.

Mistake 7: Ignoring the cheat sheet. The website factorio.school has blueprints. kirkmcdonald.github.io is a calculator. I use the calculator constantly. "I want 1,000 SPM, what do I need?" The calculator tells me: 100 oil refineries, 200 chemical plants, 400 furnaces. That's not a guess. That's math. Use the tools the community made for you. I don't calculate ratios in my head. I use the calculator. It saves me hours of rework.

FAQ

Q: Should I buy the game even if I don't like strategy games?

I don't know you, but I know this: Factorio is a puzzle game first. It's about logistics, not combat. If you like the feeling of solving a problem and seeing it work, you'll like this. The combat is a minor part until the late game. If you hate being attacked, turn off biters in the map settings. People play with no enemies all the time. It's still a good game. You're not cheating.

Q: How do I deal with biters when they start attacking my walls?

First, check your pollution cloud. Is it touching their nests? If yes, either kill the nests or reduce your pollution (efficiency modules in miners reduce power draw). Second, upgrade your turrets. Piercing ammo is a massive upgrade over standard ammo. The damage difference is 5 vs 8 base damage, plus the piercing bonus. I switch to piercing as soon as I have steel. Third, use dragon's teeth — walls placed in a staggered pattern outside your main wall. Biters path around them, slowing them down and giving your turrets more time to shoot. It's a tiny trick that doubles your effective defense.

Q: When should I start using trains?

When your first iron patch runs below 100k ore left. Before that, belts are fine. Trains are a headache to set up and maintain. Do not overcomplicate. One train, one route, one resource. Expand later.

Q: Is modding worth it?

Yes, but not on your first playthrough. Play vanilla until you launch a rocket. The base game is designed as a complete experience. Mods like Bob's/Angel's or Krastorio are not "improvements" — they're different games. I've played a lot of modded, but I respect the vanilla design. It's tight. It's balanced. After the rocket, try Space Exploration (my favorite overhaul mod) or Industrial Revolution 3.

Q: My factory is a mess of belts. Should I restart?

Yes, and no. If you've automated up to blue science, your base is functional even if it's ugly. I've launched rockets from spaghetti bases that looked like a plate of noodles. The factory works. That's what matters. But if you're stuck, if you can't figure out where to add new production lines, and if the biters are eating you alive, a restart with your new knowledge will be 10x faster. My second playthrough took half the time of my first. My third was half of that. Restarting is learning. It's not failure.

Q: What is the "bus" and why does everyone talk about it?

A main bus is a set of parallel belts that carry the basic resources (iron, copper, steel, circuits) through your factory. You "tap" off the bus with splitters to feed your assemblers. It prevents spaghetti. There are detailed guides on how to build one, but the basics: 4 lanes of iron, 4 lanes of copper, 2 lanes of steel, 2 lanes of green circuits. Leave 2 tiles of space between each set of lanes (for underground belts). That's it. It's not rocket science. It's just organization.