Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
Recent Reviews:
Overwhelmingly Positive (640) - 96% of the 640 user reviews in the last 30 days are positive.
All Reviews:
Overwhelmingly Positive (25,949) - 98% of the 25,949 user reviews for this game are positive.
Release Date:
Feb 25, 2016

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“We have been working on Factorio for over 5 years. The game is very stable and is highly optimised for prolonged gameplay and creating huge factories. We have sold over 110,000 copies on our website, and we feel now is the right time to release to a wider audience.”

Approximately how long will this game be in Early Access?

“Our plans for release come as part of an ongoing process, and we are constantly adding new features and content. When we feel the game is complete we will release the full version, and our current estimate is that this will take 8-12 months.”

How is the full version planned to differ from the Early Access version?

“In the full version we hope to have a polished GUI, a multiplayer matching server, integration of mods for players and servers, and a number of other finishing touches and additions to the core gameplay.”

What is the current state of the Early Access version?

“The game has a very strong content base, rich with interesting mechanics and features. Many players report they are still having fun on their maps even after hundreds of hours of gameplay, alongside multiplayer support, and a dedicated modding community.”

Will the game be priced differently during and after Early Access?

“The price may be increased upon release from early access.”

How are you planning on involving the Community in your development process?

“The community is a vital part of our development process. We announce any planned features far in advance so we have time to read peoples' opinions and comments, and for us to discuss the different points of view players may have. Community suggested ideas are commonly brought up in team discussions, and we value highly the input each individual player can have.”
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Recent updates View all (236)

March 23

Friday Facts #235 - 0.16 stable

0.16 to be declared stable

Rseding thinks that we have the least amount of bugs in the game we ever had. Mostly because of the automated reporting system and partly because of my pushing of everyone to fix everything before starting other tasks. The 0.16.35 (to be released soon) will be declared stable on Monday, if no critical problems are discovered.
This naturally leads us to:
0.17 plan
Major features of 0.17:
  • Mini tutorials (kovarex, Twinsen, Albert, wheybags).
    We would like to iteratively improve the quality of the tutorials based on our first attempts and cover the rest of the game mechanics by it.
  • Improved First Steps campaign and new main campaign (v453000, Albert, wheybags, Ben).
  • Gui rewrite. (Twinsen, kovarex, Dominik, Albert).
    It is both improving the looks of the GUI and changing the way it works. Some of the drafts were already published in FFF-212 andFFF-191.
  • New graphics back-end, SDL, OpenGL, DX11, v-sync fix, texture streaming, VRAM usage optimizations, shaders (posila, hanziq, jindri, wheybags).
  • Recipe tree GUI (Oxyd).
    This should be the foundation of some kind of ingame factoriopedia. It should provide the player fast ways to get the answer to questions like: "what is this item used to?" and "What is the graph of recipe dependencies for this".
  • Mod integration improvements (HanziQ, Rseding).
    Mainly extend the feature of syncing mods with save from save loading to multiplayer game joining, mod browsing improvements, which should at least show the mod picture and more smaller things.
  • Map Editor improvements, both technical and usability wise (Rseding).
  • Map generator improvements and fixes, autoplace specification improvements and documentation (TOGoS).
  • High-Resolution sprites for the rest of the game, including few changes to some entities (GFX).
  • Final game balancing (kovarex, v453000, Twinsen).
  • Spidertron (kovarex, GFX)
  • Better car handling and car in latency state (Dominik)
  • Better fluid physics
  • Organised playtesting for the new GUI, campaigns and tutorials before release.
The big picture
0.17 is a 1.0 candidate, but due to all the new rewrites (new GUI, new graphics, new tutorials, new campaigns), it is very likely that there will be unforeseen changes we need to do. So 0.18 should be a rather short release where we polish the GUI and campaign based on player feedback and also fix any final or long-standing bugs, possibly fix long-standing minor issues and once it becomes stable, it will be declared 1.0 once stabilized.

Weird crash reports
In 0.16.31 we released a bug fix for a specific modded scenario that involved some heavy refactoring of game logic that checked if an item could be put into a given entity. Once 0.16.31 was live we started to get an unusual amount of crash reports inside the Furnace::canInsert(...) logic which made no sense. I thought maybe my fix somehow broke the furnace logic but I couldn't see how it was possible.

I spent half an hour theorizing what might be happening but got nowhere. Then I decided to see if any of the other devs might have ideas. Still, we had no idea what could possibly cause it to crash where it was crashing. We finally decided to change our crash log uploading to include minidumps for this specific crash in hopes it would shed some light on the issue.

From one of these minidumps, we got a look at the raw assembly code causing the crash, which confused things even further, as it said it was executing code that didn't exist in the executable:

00007FF6DA0B13B2 48 8B 8D D8 00 00 00 mov rcx,qword ptr [rbp+0D8h] 00007FF6DA0B13B9 41 B2 01 mov r10b,1 00007FF6DA0B13BC 48 3B 8D E0 00 00 00 cmp rcx,qword ptr [rbp+0E0h] 00007FF6DA0B13C3 74 51 je Furnace::canInsert+106h (07FF6DA0B1416h) 00007FF6DA0B13C5 48 8B 03 mov rax,qword ptr [rbx] 00007FF6DA0B13C8 E9 33 EC E3 FF jmp 00007FF6D9EF0000 // Jump outside of the Factorio executable 00007FF6DA0B13CD 90 nop // Padding 00007FF6DA0B13CE 90 nop // Padding 00007FF6DA0B13CF ?? ?? ?? // Illegal instruction - crashes here 00007FF6DA0B13D0 75 3F jne Furnace::canInsert+101h (07FF6DA0B1411h) 00007FF6DA0B13D2 0F B7 41 04 movzx eax,word ptr [rcx+4] 00007FF6DA0B13D6 45 32 D2 xor r10b,r10b

When 0.16.33 went out the number of crashes in Furnace::canInsert(...) dropped by a factor of 15. We changed nothing about how it worked and somehow it was crashing less. After some further discussion this morning, we believe that we've got a plausible explanation as to what is going on:

Someone probably used something similar to Cheat Engine to cheat by modifying the program memory runtime. In fixing a bug, I refactored how Furnace::canInsert(...) operates enough that the executable now crashed in what ever the cheat engine script was doing. As we released new versions, the people using that script stopped using it because it was crashing their game, and so we stopped getting crash reports.

As always, let us know what you think on our forum
19 comments Read more

March 22

Factorio 0.16.33 released

  • Added dropdown to the replay viewing control that allows to switch between the view of different players.
  • Updated map-gen-settings.example.json. more
  • Fixed, that when the server is slower then the client, the player input is stuck. more
  • Fixed that using rail by the rail planner stopped replay. more
  • Fixed that burner inserter didn't show fuel in the entity info. more
  • Fixed that blueprint manipulation was broken in replays. (even opening the gui crashed the game) more
  • Fixed PvP script error when 'DEFCON timer' was set too low. more
  • Fixed that ctrl-click to transfer modules into assembling machines didn't work correctly. more
  • Small improvement in mining logic when using rail planner. more
  • Fixed an issue with un-researching upgrade-based technologies. more
  • Fixed a layering issue related to the train stop visualization. more
  • Fixed that player joined/left game messages weren't visible in the replay.
  • Fixed that health bar of other players weren't visible.
  • Fixed a rare crash when joining multiplayer games on Mac.
  • Fixed crash when player with debuff sticker disconnected from game and later reconnected.
  • Added recipe-prototype allow_intermediates.
  • Added events and remote interface to PvP scenario.
  • Added LuaRecipePrototype::allow_intermediates read.

You can get experimental releases by selecting the '0.16.x' beta branch under Factorio's properties in Steam.
18 comments Read more
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About This Game

Factorio is a game in which you build and maintain factories. You will be mining resources, researching technologies, building infrastructure, automating production and fighting enemies. In the beginning you will find yourself chopping trees, mining ores and crafting mechanical arms and transport belts by hand, but in short time you can become an industrial powerhouse, with huge solar fields, oil refining and cracking, manufacture and deployment of construction and logistic robots, all for your resource needs. However this heavy exploitation of the planet's resources does not sit nicely with the locals, so you will have to be prepared to defend yourself and your machine empire.

Join forces with other players in cooperative Multiplayer, create huge factories, collaborate and delegate tasks between you and your friends. Add mods to increase your enjoyment, from small tweak and helper mods to complete game overhauls, Factorio's ground-up Modding support has allowed content creators from around the world to design interesting and innovative features. While the core gameplay is in the form of the freeplay scenario, there are a range of interesting challenges in the form of Scenarios. If you don't find any maps or scenarios you enjoy, you can create your own with the in-game Map Editor, place down entities, enemies, and terrain in any way you like, and even add your own custom script to make for interesting gameplay.

Discount Disclaimer: We don't have any plans to take part in a sale or to reduce the price for the foreseeable future.

What people say about Factorio

  • No other game in the history of gaming handles the logistics side of management simulator so perfectly. - Reddit
  • I see conveyor belts when I close my eyes. I may have been binging Factorio lately. - Notch, Mojang
  • Factorio is a super duper awesome game where we use conveyor belts to shoot aliens. - Zisteau, Youtube

System Requirements

Mac OS X
SteamOS + Linux
    • OS: Windows 10, 8, 7, Vista (64 Bit)
    • Processor: Dual core 3Ghz+
    • Memory: 4 GB RAM
    • Graphics: 512MB Video Memory
    • Storage: 1 GB available space
    • Additional Notes: Low sprite resolution and Low VRAM usage.
    • OS: Windows 10, 8, 7 (64 Bit)
    • Processor: Quad core 3Ghz+
    • Memory: 8 GB RAM
    • Graphics: 2GB Video memory
    • Storage: 1 GB available space
    • OS: macOS High Sierra, Sierra, OSX El Capitan, Yosemite, Mavericks
    • Processor: Dual core 3Ghz+
    • Memory: 4 GB RAM
    • Graphics: 512MB Video Memory
    • Storage: 1 GB available space
    • Additional Notes: Low sprite resolution and Low VRAM usage
    • OS: macOS High Sierra, Sierra, OSX El Capitan, Yosemite, Mavericks
    • Processor: Quad core 3GHz+
    • Memory: 8 GB RAM
    • Graphics: 2GB Video memory
    • Storage: 1 GB available space
    • OS: Linux (tarball installation)
    • Processor: Dual core 3Ghz+
    • Memory: 4 GB RAM
    • Graphics: 512MB Video Memory
    • Storage: 1 GB available space
    • Additional Notes: Low sprite resolution and Low VRAM usage
    • OS: Linux (tarball installation)
    • Processor: Quad core 3GHz+
    • Memory: 8 GB RAM
    • Graphics: 2GB Video memory
    • Storage: 1 GB available space
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