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: 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 they are reported.

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

  • Some player inventory tech modules and ship inventory tech modules are in the wrong spot. You’ll need to move them.

Notice

  • The “redux” version of this expedition changed some rewards to those from expedition 1, 4 and 5. A patch has been created so you can choose which rewards you get.

Notice

  • Some player inventory tech modules and ship inventory tech modules are in the wrong spot. You’ll need to move them.

Notice

  • Freighters are very buggy in this expedition and they can be hard to acquire. A patch has been created to start you off with a freighter. This patch also rewards you with the first part of the pirate map as the P1M3 reward, since that can also be very buggy.
  • If you have an existing save in this expedition and need the pirate map fragment 1, use a save editor to give yourself the PIRATE_MAPPROD0 item.

Notice

  • Permadeath warning: It is not possible to finish this expedition in permadeath mode. If you can avoid death until the final milestone, your expedition AND primary save will be deleted by “submitting.”
  • The community milestones cannot be completed offline. A patch has been created to replace them with other milestones (ignore the message about Vile Spawns, you can collect them at any time). Unfortunately the Memory Fragments never upgrade.
  • This expedition breaks a lot, in particular the “reset save on death” mechanic. It seems to be working now, but if it breaks you can use the patch to disable it.

Notice

  • A pirate freighter is used as your starting freighter in some scenarios. This causes an issue with the captain not properly allowing you to read the logs. A patch has been created to force a civilian freighter. If you still get a pirate freighter, save, exit to desktop, and start your game again.

Notice

  • ‘When starting this expedition from an existing save, The Anomaly will not show up after the expedition is completed. A patch has been created to fix this issue:’

Notice

  • Many planets have changed, so most guides are no longer going to have correct information. bedev0001’s post has some portal glyphs for various types of fauna.

Notice

  • Community milestones cannot be completed while offline. A patch has been created to replace them with offline milestones.

Notice

  • Community milestones cannot be completed while offline. A patch has been created to replace them with offline milestones.

Presets

Click a button below to load a customization preset.

  • Property Default Override

    AbandonedFreighterHazardProtectionMul

    Turn this down for more challenge?

    BlockAggressiveSentinelsInStartSystem

    BlockStormsAtStart

    CarnageMode

    Makes Biological Horrors pop up at every location you go to

    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

    Resets your expedition milestones, equipment and items when you die, like the Leviathan expedition.

    Warning: This mechanic breaks from time to time and can lock your save file. To fix this you can use a save editor to edit the raw JSON of your save file and change `ActiveContext` from `Season` to `Main`.

    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

    UseSpookHazardOnly

    Replaces all hazards on planets with the ghost effect from The Cursed

  • 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
Nintendo Switch:
Thanks to gusklein for figuring this out: Using DBI.nro (or similar), open game saves, look for the No Mans Sky SD.Cache folder

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, or you need to block NMS via a firewall) when you play 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. If you go online while in an expedition, the expedition will abruptly end.

Debug Info/Tools

Expedition Overrides/Patches
Expedition Patch Creator


Notes

General

  • 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)

  • Some player inventory tech modules and ship inventory tech modules are in the wrong spot. You’ll need to move them.

03: Cartographers (Redux)

  • The “redux” version of this expedition changed some rewards to those from expedition 1, 4 and 5. A patch has been created so you can choose which rewards you get.

04: Emergence (Redux)

  • Some player inventory tech modules and ship inventory tech modules are in the wrong spot. You’ll need to move them.

06: The Blighted (Redux)

  • Freighters are very buggy in this expedition and they can be hard to acquire. A patch has been created to start you off with a freighter. This patch also rewards you with the first part of the pirate map as the P1M3 reward, since that can also be very buggy.
  • If you have an existing save in this expedition and need the pirate map fragment 1, use a save editor to give yourself the PIRATE_MAPPROD0 item.

07: Leviathan (Redux)

  • Permadeath warning: It is not possible to finish this expedition in permadeath mode. If you can avoid death until the final milestone, your expedition AND primary save will be deleted by “submitting.”
  • The community milestones cannot be completed offline. A patch has been created to replace them with other milestones (ignore the message about Vile Spawns, you can collect them at any time). Unfortunately the Memory Fragments never upgrade.
  • This expedition breaks a lot, in particular the “reset save on death” mechanic. It seems to be working now, but if it breaks you can use the patch to disable it.

08: Polestar (Redux)

  • A pirate freighter is used as your starting freighter in some scenarios. This causes an issue with the captain not properly allowing you to read the logs. A patch has been created to force a civilian freighter. If you still get a pirate freighter, save, exit to desktop, and start your game again.

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 created to fix this issue:’

11: Voyagers (Redux)

  • Many planets have changed, so most guides are no longer going to have correct information. bedev0001’s post has some portal glyphs for various types of fauna.

12: Omega (Redux)

  • Community milestones cannot be completed while offline. A patch has been created to replace them with offline milestones.

14: Liquidators

  • Community milestones cannot be completed while offline. A patch has been created to replace them with offline milestones.