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 a fork of the original UE4SS maintained by the same people who maintain Nautilus and other core libraries for Subnautica and Subnautica: Below Zero.

We will maintain and update this file as needed. 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/Subnautica2Modding/Subnautica2-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 use .pak files. It instead uses .utoc 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