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.
User reviews:
Overwhelmingly Positive (701 reviews) - 97% of the 701 user reviews in the last 30 days are positive.
Overwhelmingly Positive (18,938 reviews) - 98% of the 18,938 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 (168)

August 11

Friday Facts #203 - Logistic buffer chest

Further optimisations
I finished the item stack optimisations mentioned in FFF-198, and was able to do some performance tests. First I tested how many stacks on a big map actually need to use an externally allocated object (Item), and how many of them are plain. On the huge map I tested, it turned out that only 36K out of 1M stacks need the Item object. These were mainly science packs, as they need it for the progress of how used-up they are (and now when I think about it, it could also be omitted by only using the objects for science packs that are partially used up already). Overall factory performance was increased approximately 2% by this. It is nothing huge, but every bit matters.

One of the programmer that has read access to the code (Zulan), came up with a pull request that improves performance in Factorio by prefetching memory in the update loops ahead.

The problem when normally updating objects is, that CPU asks for memory representing the object. The memory is slow, at least compared to the CPU cache or the CPU speed. The memory transfer speed itself is not that slow, but the waiting (latency) time between ordering and receiving it is. This means, that what very often happens is, that CPU orders data of next entity from the memory, then it waits for quite a long time to get it, and then it does its logic. The memory prefetching partially solves it by doing this:
  • Order data of the next entity from memory (prefetch)
  • Do the logic of the current entity in the meantime
  • Go back to start
The overall measured performance improvements vary between 6-10%, which is certainly a nice addition.

Logistic buffer chest
As flexible and powerful as it is, we have always felt there was one key missing to the puzzle. The main issue is that requester chests cannot provide their items to any other member of the logistics system. Trying to workaround this by putting an inserter to a passive provider, just leads to the robots moving the items in a loop. This is also a nuisance trying to supply construction robots with materials, as they can only collect them from storage or provider chests, and they are only typically located in the main base areas.

It is easy to design a system to resupply far out areas using trains to directly put items in provider chests, but if they are in the same logistic network we encounter the same loop as before. We were also concerned of people segregating their logistic networks for more control, it seems to us it was a workaround to a problem we should fix. The solution is the buffer chest, which functions as both a requester and passive provider chest.

You can see the buffer can act as an 'in-between' for storage/provider chests and the requesters. This leads to a solution of the main annoyances we identified.

Typically when you set up all the provider chests, they are spread out across your whole factory. When you return to base for a resupply, you end up waiting for a long time while the bots travel from all over the factory with items. By using a buffer chest, you can setup a dedicated 'supply area', where the buffer chest will already contain all the typical items, and the bots can quickly top-up your inventory.

Another problem is when you have a large perimeter defence, and you want it to be maintained by the construction robots. When the main base is so far away, it can take a long time for robots to arrive with repair packs, so the biters might be able to break through. Using the buffer chest, it will be easy to setup nearby supplies to quickly repair the walls when needed.

Last, but not least use-case is when you want to dedicate part of your storage for specific things. The reason can be either just OCD, or the fact, that you can make sure that too much coal for example won't make it impossible to store enough of iron ore in your storage system.

High resolution robots
Here we present you the regular dose of new entities updated for high resolution for the hopefully fully high-res friendly 0.16 release.

As always, leave us any feedback or comments on our forum
89 comments Read more

August 9

Factorio 0.15.33 released

  • Mod name in mod info pane will no longer be localised. more
  • Optional mod dependencies now show as orange when invalid. more

  • Fixed crash when trying to load replay that is not compatible with current version.
  • Fixed ghosts might emit light. more
  • Fixed removing land mines didn't make any sound. more
  • Fixed creating window larger than screen. more
  • Improved performance of rendering uranium ore. more

  • Bonus UI now shows additional force modifiers more
  • simple-entity-with-owner (and simple-entity-with-force) now supports apply_runtime_tint in sprite definition.

  • simple-entity-with-owner exposes color property through LuaEntity::color. Set it to {r=0, g=0, b=0, a=0} to use color of entity's force.
  • Fixed LuaEntityPrototype::distribution_effectivity would return value of supply_area_distance instead. more

You can get experimental releases by selecting the 'experimental' beta branch under Factorio's properties in Steam.
23 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 Sierra, OSX El Capitan, Yosemite, Mavericks, Mountain Lion, Lion
    • 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 Sierra, OSX El Capitan, Yosemite, Mavericks, Mountain Lion, Lion
    • 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
Customer reviews Learn More
Overwhelmingly Positive (701 reviews)
Overwhelmingly Positive (18,938 reviews)
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