Source-checkedVehicles & ships

Reversetorio

by Subject314159 · for Factorio

Factorio but in reverse. You start with a rocket silo and your goal is to craft the crash site space ship. Decompose science into items, unassemble items into basic materials and unsmelt basic materials into ores.

266Downloads
2 yr agoLast updated
GPL-3.0License
Factorio Mod PortalSource

About Reversetorio

From Factorio Mod Portal

Factorio but in reverse. You start with a rocket silo and your goal is to craft the crash site space ship. Decompose science into items, unassemble items into basic materials and unsmelt basic materials into ores.

Welcome to Reversetorio

More or less, less is more, but how you keeping score? Means for every research you make your level drops, kinda like you're starting from the top. Turns out, you can do that.

Factorio but in reverse. You start with a rocket silo and your goal is to craft the crash site space ship. Decompose science into items, unassemble items into basic materials and unsmelt basic materials into ores.

Start by generating some random numbers

One magical logo

The Factorio logo is imbued with magical powers and spawns random numbers

..and move them in bulk

With great power comes great inserter hand capacity

I promised myself not to make a "that's what she said" joke but damn those things are huge..

..to spawn any item

Nothing beats a nice hot cup of tea

Feed probability numbers into finite probability drives to spawn items at will

..or any science

Labs are also reversed

Why go through all the trouble of long recipe chains if you can just spawn science from thin air?

..then uncraft every item back to raw resources

Uncraft any item

Break down items to the most basic resources

..so that you can rebuild the crash site

Research the crash site

Finally your personal space ship is here! It's a bit wrecked though..

Embark on a mental journey

So you think you're good at Factorio, huh? Well be prepared to forget everything you know and get ready for one of the biggest mindfucks in historio.


Recommended companion mods

Mod compatibility

This mod relies on procedural creation of items, entities, recipes and technology. By design this mod should be compatible with a lot of other mods, even those that add a lot of content.

As always there are exceptions, incompatibility arises for:

  • Mods that add "free" recipes, i.e. either no ingredients required (spawning) or no results defined (voiding)
  • Mods that alter recipes during data-final-fixes
  • Mods that have an alternative victory condition
  • Mods that unlock recipes outside the technology tree

This mod starts with a limited number of crafting recipes available which by design _should_ prevent deadlocks. However, since fast progression and growing the factory is desirable, risk on inefficiency grows for:

  • Mods that add a lot of new technology preceding key technology unlocks (such as belts, power poles, inserters)
  • Since the technology tree is traversed backwards it would take a lot of time to reach these key points
  • Mods that add a lot of recipes that require key entities (such as belts, power poles, inserters)
  • Because spawn recipes are only generated for end items (i.e. items which are not an ingredient in other recipes)

Known issues

This mod is in early development stage and playable from finish to start. There are still some major-minor issues which are non-gamebreaking that should be taken into account:

  • Recipe balancing and gameplay mechanics are currently being tested and might change in the future
  • Technology names for end items are not displayed correctly
  • Oil refinery recipes not working correctly due to uneven in-/outputs
  • Inverse machines for fluids not yet available
  • Technology sort order is incorrect
  • Enabling setting 'retain original recipes' creates non-exclusive smelting recipes
  • Mods that copy recipes without updating the sort order or add recipes without sort order will mess up the sort order of the reverse recipes as well (won't fix)
  • Start menu background videos with crafting chains are broken (won't fix)
  • The source code is a mess, but it works™

Roadmap

  • Solve known issues

Acknowledgement

  • JSON interpreter: https://github.com/rxi/json.lua/blob/master/json.lua
  • Blueprint decoder: https://burnysc2.github.io/Factorio/Tools/DecodeBlueprint/
  • JSON minifier: https://codebeautify.org/jsonminifier

FAQ

Not all recipes are available after mod version has been updated

When there are major updates in the code it can be that additional recipes get unlocked via the tech tree, which were not there in a previous version. To fix this and reset the technology unlock effects use command /c game.players[1].force.reset_technology_effects()

Highlights

From source data

Footprint

Rated a light load on a server.

License

Published under GPL-3.0.

Last update

Its author last shipped an update 2 yr ago.

Reversetorio on Nxeon

From our catalogue
One-click install
Supported on Nxeon Factorio servers. We download it from Factorio Mod Portal, place it, and restart the server.
Server side
Required on the server
Server load
light
Smallest plan we suggest
Factorio — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
0.1.2, released 2024-08-17

Recent builds

BuildReleasedGame versionsLoaders
0.1.22024-08-171.1n/a
0.1.12024-08-141.1n/a
0.1.02024-07-061.1n/a

Dependencies

Declared by the newest build that lists any. Required ones are installed with it on one-click installs.

Run Reversetorio on a Factorio server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Factorio Mod Portal as “Mods”

Vehicles & ships

Cars, boats, aircraft, ships and other things to drive or fly.

Runs on your server

From source side support

Factorio Mod Portal lists Reversetorio as required on the server. Check its Factorio Mod Portal page to see whether players need it too.

Compatibility

Game
Factorio
Runs on
Serverrequired on the server

Verified at the source

  • ✓Factorio Mod PortalOfficial listing, checked 2026-10-09Open ↗
  • ✓AuthorSubject314159, as published on Factorio Mod Portal
  • ✓LicenseGPL-3.0Free

Reversetorio, answered

Generated from the mod’s own source data.

Do my players need to install Reversetorio?

Factorio Mod Portal lists Reversetorio as required on the server. Check its Factorio Mod Portal page to see whether players need it too.

Is it free?

Yes. Reversetorio is free to download from Factorio Mod Portal. Its license is GPL-3.0.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Reversetorio on a Factorio server.

Deploy in about a minute from $2.99 a month, then add Reversetorio in one click.