Outer Wilds Archipelago Randomizer


An Outer Wilds mod for the Archipelago multi-game randomizer system.


Public Beta (as of June 2024).

Many people have played this, usually with no issues. Nearly every bug that's been reported has either been fixed, or was found to not be caused by this mod. Many features are complete, including a full in-game tracker. But we're still missing DLC integration, random spawn, etc. See Roadmap.

Unfortunately there is a well-known "end-of-loop crash", but it affects only some players, is inconsistent for everyone it does affect, and the evidence we do have implies it's not caused by this mod, so there's currently no solution for it.


For questions, feedback, or discussion related to the randomizer, please visit the "Outer Wilds" thread in the Archipelago Discord server, or message me (ixrec) directly on Discord.

What is an "Archipelago Randomizer", and why would I want one?

Let's say I'm playing Outer Wilds, and my friend is playing Ocarina of Time. When I translate some Nomai text in the High Energy Lab, I find my friend's Hookshot, allowing them to reach several OoT chests they couldn't before. In one of those chests they find my Signalscope, allowing me to scan all the signals in the OW solar system. I scan Chert's Drum signal, and find my friend's Ocarina. This continues until we both find enough of our items to finish our games.

In essence, a multi-game randomizer system like Archipelago allows a group of friends to each bring whatever games they want (if they have an Archipelago mod) and smush them all together into one big cooperative multiplayer experience.

What This Mod Changes

Randomizers in the Archipelago sense—which are sometimes called "Metroidvania-style" or "progression-based" randomizers—rely on the base game having several progression-blocking items you must find in order to complete the game. In Outer Wilds progression is usually blocked by player knowledge rather than items, so to make a good randomizer we take away some of your starting equipment, and turn much of that player knowledge into items. Here are several examples:

  • Translator
  • Scout
  • Signalscope
    • each Signalscope frequency (besides OW Ventures) is an item that blocks scanning signals on that frequency
    • each Signalscope signal is also an item that blocks detecting that signal at long distance (most of these are "filler" items, but the signals inside Dark Bramble are required to make progress in there)
  • Ghost Matter Wavelength (an upgrade for your camera, which can no longer see ghost matter by default)
  • Nomai Warp Codes (replaces "the player knowing how warp pads work" with a button prompt)
  • Silent Running Mode (the fish have better hearing without this)
  • Tornado Aerodynamic Adjustments
  • Coordinates
  • and several more

There are also many non-blocking but still useful items, such as the ship's Autopilot, some Oxygen/Fuel Capacity Upgrades, several Oxygen/Fuel Refills and Marshmallows, and so on.

In randomizer terms: "items" are placed at randomly selected "locations" (while ensuring the game can still be completed). Most of the locations in this randomizer are:

  • Notes, tape recorders and fuel tanks left by other Hearthians
  • Translating pieces of Nomai text (e.g. the High Energy Lab experiment)
  • Reaching important in-game places (e.g. the core of Giant's Deep)
  • Scanning each Signalscope signal source
  • Revealing facts in the Ship Log (which is usually also one of the above)

The Ship Log has also been enhanced with lists of every item and location, which of those locations are reachable (in randomizer terms: an "in-game tracker"), and descriptions of each item and each location. Since the vanilla game doesn't have "items" and "locations" per se, the tracker is the easiest way to find out what you're meant to be doing.



Archipelago tools setup

  • Go to your Archipelago installation folder. Typically that will be C:\ProgramData\Archipelago.
  • Put the outer_wilds.apworld file in Archipelago\lib\worlds\.
  • Put the Outer.Wilds.yaml file in Archipelago\Players. You may leave the .yaml unchanged to play on default settings, or use your favorite text editor to read and change the settings in it.

I've never used Archipelago before. How do I generate a multiworld?

Let's create a randomized "multiworld" with only a single Outer Wilds world in it.

  • Make sure Outer.Wilds.yaml is the only file in Archipelago\Players (subfolders here are fine).
  • Double-click on Archipelago\ArchipelagoGenerate.exe. You should see a console window appear and then disappear after a few seconds.
  • In Archipelago\output\ there should now be a file with a name like AP_95887452552422108902.zip.
  • Open https://archipelago.gg/uploads in your favorite web browser, and upload the output .zip you just generated. Click "Create New Room".
  • The room page should give you a hostname and port number to connect to, e.g. "archipelago.gg:12345".

For a more complex multiworld, you'd put one .yaml file in the \Players folder for each world you want to generate. You can have multiple worlds of the same game (each with different settings), as well as several different games, as long as each .yaml file has a unique player/slot name. It also doesn't matter who plays which game; it's common for one human player to play more than one game in a multiworld.

Modding and Running Outer Wilds

  • In the Outer Wilds Mod Manager, click on "Get Mods", search for "Archipelago Randomizer", and once you see this mod listed, click the install button to the right of it.
  • (Optional: Other Mods) Some other mods that I personally like to play with, and that this randomizer is compatible with, include: "Clock" (exactly what it sounds like), "Cheat and Debug Menu" (for its fast-forward button), and "Suit Log" (access the ship log from your suit).
  • Now click the big green Run Game button. Note that you must launch Outer Wilds through the Mod Manager in order for the mods to be applied; launching from Steam won't work.
  • Once you're at the main menu of Outer Wilds itself, click "New Random Expedition", and you will be asked for connection info such as the hostname and port number. Unless you edited Outer.Wilds.yaml (or used multiple .yamls), your slot/player name will be "Hearthian1". And by default, archipelago.gg rooms have no password.

What if I want to run a pre-release version for testing, or downgrade to an older version of this mod (so I can finish a longer async)?

<details> <summary>Click here to show instructions</summary>

To use a pre-release version:

  • In the Mod Manager, go to the "Get Mods" section (not "Installed Mods")
  • Search for "Archipelago Randomizer", click the 3 dots icon next to this mod, and select the "Use Prerelease ..." option

To downgrade to an older version, you'll need to install a Ixrec.ArchipelagoRandomizer.zip manually. This repo's Releases page has all the mod .zips for past releases (and the current release .zip, which is what the Mod Manager normally downloads for you).

Either way, the Mod Manager should immediately display the version number of the mod version you installed. Be careful not to click the Fix Issues button until you want to go back to the latest stable mod version.



0.1.0 was the minimal first release to prove whether this is any fun: Just enough progression items to make a viable Archipelago-style randomizer, and only 50-something base game locations.

The 0.1.x releases fleshed out the Archipelago items and locations: useful, filler and trap items, more base game locations, and a logsanity option for even more locations. They also included an in-game tracker for the ship log with in-game descriptions of every item and location (this is much more important for OW than most randomizers since the vanilla game mostly doesn't have "items").

0.2.0+ Patch Goals

The 0.2.x releases will focus on other kinds of randomization besides items and locations.

  • random Eye coordinates
  • random Dark Bramble layout
  • random player & ship spawn (with spacesuit on, time loop started, and Launch Codes placed in a random location like most other items)
    • random warp pad destinations should go well with this
  • random planet orbits
  • random ghost matter patches
  • random in-game hints, by editing the other astronauts' dialogue trees to offer hints about valuable items or locations on their respective planets

0.3.0 Goals/Priorities

The 0.3.x releases will focus on additional content beyond the base game.

  • Echoes of the Eye DLC integration
    • Possibly randomize the flashlight
  • Story/Content mod support???
  • Outer Relics integration???

(Non-Programmer) Help Wanted

These are feature ideas I won't do myself, but if someone else would like these enough that they'd be willing to do the non-programming work for them (playtesting, drafting logic, listing/naming/describing locations, etc), and it turns out they are actually fun to play, I'll happily do the (small) programming part to finish them off.

  • Even lower starting oxygen, fuel, boost, etc so some of their upgrades become progression items, i.e. affect logic. The mod has settings to adjust these values, so you can experiment with this.
  • "rumorsanity" setting to add all the ship log "rumors", separately from the "normal facts". In the Game Logs window, this mod produces a message like ShipLogManager.RevealFact TH_VILLAGE_X1 every time a ship log fact is revealed, including "rumor facts".
  • "textsanity" setting (every note, casette tape, Nomai text line, dialogue line, etc?)
  • More base game progression items: Gravity crystals? The ability to move Nomai orbs?

Mod Compatibility

Outer Wilds mods whose content has been fully integrated into this randomizer:

  • None (yet)

Outer Wilds mods that are known to work without issue:

  • Clock
  • Cheat and Debug Menu
  • Suit Log
  • Unity Explorer
  • Light Bramble (thanks Rever for testing this), although it makes the "Silent Running Mode" item pointless
  • Time Saver (thanks Jade for testing this)

Outer Wilds mods that have been tried, but are known to have issues (this information might not be kept up to date, as I don't/can't test these myself):

  • NomaiVR (thanks Snout for testing this): Mostly works. Trying to grab the Translator or Signalscope before donning the suit will softlock, but this is fine once you're in the suit. The in-game console does not work reliably, so using the AP Text Client instead is recommended.
  • Quantum Space Buddies: Awkward but can probably be made to work. I believe you would have to use one of the "... Random Expedition" main menu buttons to connect to your AP server, immediately quit back to the main menu, then use either of QSB's main menu buttons to load the game with multiplayer. Please tell us if you can test this properly.

Story/content mods will (at best) work in a technical sense, but it wouldn't make sense to enable one of those alongside this randomizer, because this randomizer only knows how to randomize the vanilla game's content (for now).

Running From Source

<details> <summary>Click here to show instructions</summary>


In addition to the prerequisites from Installation:

Building and Running the OW Mod

  • In the Mod Manager, click the 3 dots icon, and select "Show OWML Folder". It should open something like %AppData%\OuterWildsModManager\OWML.
  • Open the Mods/ subfolder.
  • In here, create a subfolder for the built mod to live. The name can be anything, but Ixrec.ArchipelagoRandomizer fits OWML's usual format.
  • Now git clone this repository
  • Inside your local clone, open mod/ArchipelagoRandomizer.sln with Visual Studio. Simply double-clicking it should work.
  • Open mod/ArchipelagoRandomizer.csproj.user in any text editor (including Visual Studio itself), and make sure its OutputPath matches the OWML folder you created earlier.
  • Tell Visual Studio to build the solution. Click "Build" then "Build Solution", or press Ctrl+Shift+B.
  • Several files should appear in the OWML folder, including an ArchipelagoRandomizer.dll
  • In the Outer Wilds Mod Manager, make sure your locally built mod shows up, and is checked. Then simply click the big green "Run Game" button.

The .apworld and .yaml files

  • git clone my Archipelago fork at https://github.com/Ixrec/Archipelago
  • Copy the worlds/outer_wilds folder from your local clone over to the lib/worlds/ folder inside your Archipelago installation folder
    • Optionally: If you need to send this to someone else, such as the host of your player group, you may zip the folder and rename the extension from .zip to .apworld. That's all an "apworld file" is, after all.
  • Run ArchipelagoLauncher.exe in your Archipelago installation folder and select "Generate Template Settings" to create a sample Outer Wilds.yaml file</details>


  • GameWyrm for contributing this mod's in-game console, in-game tracker, and the banner art
  • Smaller direct code/content contributors, including: thestrangepie (suitless logic), hopop201 (location names/descriptions), dgarroDC (bug fix)
  • Amada, Axxroy, DCBomB, Groot, Hopop, Onemario, qwint, Rever, Scipio, Snow, and others in the "Archipelago" Discord server for feedback, discussion and encouragement
  • clubby789, dgarroDC, GameWyrm, glitchewski, JohnCorby, nebula, Trifid, viovayo, xen and others from the "Outer Wilds Modding" Discord server for help learning how to mod Unity games in general and Outer Wilds in particular, and creating the other OW mods that this randomizer relies on or is often played with
  • Nicopopxd for creating the Outer Wilds "Manual" for Archipelago
  • Flitter for talking me into trying out Archipelago randomizers in the first place
  • All the Archipelago contributors who made that great multi-randomizer system
  • Everyone at Mobius who made this great game

No relation to the OW story mod called "Archipelago"

Archipelago Randomizer

An Outer Wilds mod for the Archipelago multi-game randomizer system


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