UE4SS - Subnautica 2

UE4SS for Subnautica 2

UE4SS is a powerful tool for modding Unreal Engine games, with support for Lua scripting, C++ mods, blueprint loading, live editing and more.

This is an upload of the original UE4SS. Current commit: d7e7826d

We will only update this file when minor updates release. C++ mods must be pinned against the same commit!

Eventually, depending on the level of assistance we get from Unknown Worlds, the community may develop our own core modding libraries.

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Installation

• Download UE4SS for Subnautica 2 (the non-dev version)[/*]

• Place the zip file into your Subnautica2 Subnautica2 Binaries Win64 folder (NOT Engine)[/*]

• Right click the zip file, and select 'Extract Here' (or open the zip file and drag the contents out)[/*]

• Install any mods into the ue4ss Mods folder[/*]

• If installed correctly, when launching the game a file named UE4SS.log should appear in the ue4ss folder[/*]

↪ ℹ️ If you do not have a UE4SS.log file, you may just have a UE4SS file without .log at the end

↪ 💻 An optional developer version is available for modders (you should see an external window when launching the game)

↪ 💚 Playing through Xbox Game Pass? Place the zip file at XboxGames Subnautica 2 Content Subnautica2 Binaries WinGDK

↪ 🐧 Using Linux? Add WINEDLLOVERRIDES="dwmapi=n,b" %command% to your Steam launch arguments

↪ ❌ Do NOT place the zip file into the Subnautica2 Engine Binaries Win64 folder

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Subnautica2 Subnautica2 Binaries Win64

Subnautica2 Subnautica2 Binaries Win64 ue4ss (after launching to generate UE4SS.log)

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Documentation and Links

UE4SS Documentation: https://docs.ue4ss.com/dev/

Source Code: https://github.com/UE4SS-RE/RE-UE4SS/

Other Unreal Engine modding tools: https://github.com/Buckminsterfullerene02/UE-Modding-Tools

Info for Modders

Subnautica 2 uses Unreal Engine version 5.6.1.

SN2 does not solely use .pak files. It largely uses .utoc and .ucas files, due to using the Io Store system.

Subnautica 2 is largely written in native C++ code as opposed to managed C# in previous games.

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Are you experiencing issues?

Join the Subnautica Modding discord server for support