No Man's Sky Expedition Generator

Introduction

You can use this app to customize and generate SEASON_DATA_CACHE.JSON to play No Man's Sky expeditions offline (while that's still a thing). The concept and JSON files are from Leodium. You can view more information on Leodium's github.

Note: It looks like NMS updates can break older expeditions, which can in turn break your save files. I'll do my best to address these issues as I find them/as thy are reported.

Note 2: At the start of any expedition the reward descriptions are blank. Simply save your game and reload it to make the descriptions show up.

Step 1: Select Expedition

Step 2: Customize (Optional)

Note: You may undo these customizations and replace the JSON file at any time during your expedition.

Notice

The “redux” version of this expedition changed some rewards to those from expedition 1, 4 and 5. You may choose to get the season 3 rewards or the season 3 redux rewards below.

Notice

The NMS Orbitals update seems to have broken this expedition. Specifically the “ResetSaveOnDeath” mechanic seems to break your save file. The patch below will remove the “reset save on death” mechanic. If your save is broken, you will need to use a save editor to fix it. Renaming the “ExpeditionContext” key (or deleting the object if you know what you’re doing) in the JSON should work. Make a backup of your save first just in case.

Notice

When starting this expedition from an existing save, The Anomaly will not show up after the expedition is completed. Use the patch below to fix this issue:

Notice

To complete all milestones in this expedition, a patch must be applied:

Presets

Click a button below to load a customization preset.

  • Property Default Override

    AbandonedFreighterHazardProtectionMul

    Turn this down for more challenge?

    BlockAggressiveSentinelsInStartSystem

    BlockStormsAtStart

    DefaultToPvPOff

    DifficultySettingPreset

    This won't actually set you to Permadeath if you select it, see GameMode below.

    DistanceFromShipAtStartOfGame

    EnergyDrainMultiplier

    Turn this up for more challenge?

    Expedition End Date

    FarmPlantsTimerMul

    Turn this up for more challenge?

    ForceStartSystemAbandoned

    GameMode

    Warning: If you choose Permadeath and die in the expedition, your main save will be deleted as well.

    HazardProtectionDrainMultiplier

    Turn this up for more challenge?

    MustCraftInBases

    ResetSaveOnDeath

    I believe this resets your expedition milestones, equipment and items when you die, like the Leviathan expedition.

    Warning: The Orbitals update seems to have broken this mechanic. I would not recommend setting this to "TRUE"

    ShipStartsDamaged

    Warning: If you set this to true and start on a freighter, you will be stuck

    ShipType

    StartAboardFreighter

    StartingSuitSlots

    StartingSuitTechSlots

    StartNextToShip

    StartWithFreighter

    TechCostMultiplier

    Increase this to make Technology modules cost more

    UseRandomPet

  • These settings only affect the minimum setting that can be selected in the options menu, you will still need to set the difficulty options after you start the expedition.

    Property Default Override

    Survival Elements

    Survival Difficulty

    Natural Resources

    Sprinting

    Scanner Recharge

    Damage Levels

    Damage taken from environment

    Technology Damage

    Liklihood of suit modules breaking when recieving damage

    Death Consequences

    Fuel Usage

    How much it takes to recharge stuff

    Crafting

    Purchases

    Goods Availability

    How common items are in shops

    Enemy Strength

    On-Foot Combat

    Space Combat

    Creatures

    Inventory Transfer Range

    Hyperdrive System Access

    Base Power

    Reputation & Standing Gain

  • Property Default Override

    RemixNumber

    I have a theory this number is used to allow people to replay expeditions when they are re-released. If so, and you want to replay an expedition on your main save, you should probably change the number to something really high, like 10000 so it won't block you from playing future re-releases of expeditions.

    Warning: Changing this number *could* affect your ability to play future expeditions on your main save.

    SeasonType

Import/Export

Step 3: Download

Save to the appropriate directory:

Steam PC:
%APPDATA%\HelloGames\NMS\{steam id}\cache
Steam Mac:
~/Library/Application Support/HelloGames/NMS/cache
MS Store/GOG:
%APPDATA%\HelloGames\NMS\cache
SteamDeck:
/home/deck/.steam/steam/steamapps/compatdata/275850/pfx/drive_c/Users/SteamUser/AppData/Roaming/HelloGames/NMS/cache

Note: These directories may be somewhat different on your machine.

You must be OFFLINE (meaning Steam needs to be in offline mode, or you need to disconnect from the internet) when you start NMS for this to work, otherwise your expedition JSON will be overwritten and any offline expeditions you were on will end when you load the save.

Debug Info/Tools

Expedition Overrides/Patches
Expedition Patch Creator


Notes

  • At the start of any expedition the reward descriptions are blank. Simply save your game and reload it to make the descriptions show up.
  • Some expeditions start with tech in inventory slots. You need to move them.
  • If you need Polo to show you Atlas stations, he won't do it UNLESS you also ask him to show you black holes. Then you will see both on your galaxy map.
  • If you start your game in online mode after starting an offline expedition, you will be taken to the Anomaly and the expedition will end. If you do not save before closing the game, you can go offline and resume the expedition.

01: Pioneers (Redux)

  • Couldn't move all the suit/ship modules to the tech slots, so you will need to move them manually.

02: Beachhead (Redux)

  • Couldn't move all the suit/ship modules to the tech slots, so you will need to move them manually.

04: Emergence (Redux)

  • Couldn't move all the suit/ship modules to the tech slots, so you will need to move them manually.

07: Leviathan (Redux)

  • Warning: This expedition has a milestone to die. If you do the milestone on Permadeath, your expedition and main save will be deleted!

08: Polestar (Redux)

  • The optional milestone to board another player's freighter has been replaced with a nautical themed milestone to go along with crafting a Nautilus

09: Utopia (Redux)

  • When starting this expedition from an existing save, The Anomaly will not show up after the expedition is completed. A patch has been added to change the final milestone reward to unlock The Anomaly.
  • Required "upload your base" milestones have been replaced with other milestones since they cannot be completed offline.

10: Singularity

  • Both optional milestones and one required milestone can't be done offline, so they will auto complete once you do the second milestone in phase 5 and save/reload once.

12: Omega

  • The optional research milestones couldn't be done offline, so a patch was created to replace them with other milestones from previous expeditions.