SmartlyDressedGames/U3-SDKPublic

Source code for Unturned, a free open-world zombie survival sandbox game.

AI summary: The official SDK source code for Unturned, providing modding and game engine tools.

Stars: 3.4K; +43 today
Forks: 450
Watchers: 64
Open issues: 183
Open PRs: 0
Contributors: ~2
Commits: 15
Branches: 1

C#OtherCreated Oct 16, 2017Last push 4d agoLatest release v3.26.3.4+94 stars this week+145 this month

Star history

since Jun 14, 2026

3.4K stars as of Aug 7, 2026, tracked back to Jun 14, 2026. Historical curve reconstructed from public GitHub event archives, calibrated to the current total.

Contribution activity

commits per day, last 52 weeks

6 commits in the last yearLessMore

Signals and awards

derived from tracked data

Battle-tested
8 years of history

What U3-SDK does

U3-SDK provides the source code and development kit for creating mods and content for the game Unturned. It offers a structured Unity project environment where developers can access core game scripts, assets, and APIs. The SDK allows for deep integration with the game's mechanics, enabling custom maps, vehicles, weapons, and game modes. It bridges the gap between Unity editor tools and the running Unturned game engine.

Game modders and C# developers looking to create content for Unturned. Requires Unity 2022.3.62f3 and a copy of the base game.

Unity Integration: Built as a standard Unity project for familiar game development workflows.
Full API Access: Provides access to internal game systems for deep modding capabilities.
Asset Bundling: Tools to correctly package and export content for the Steam Workshop.
Live Testing: Allows developers to test code changes directly by pressing Play in the Unity Editor.
Comprehensive Documentation: Accompanied by detailed modding guides and examples.

Where teams use it

Mod Creation

Develop custom weapons, vehicles, or items for the Unturned community.

Custom Maps

Design and export new levels and environments using Unity's scene editor.

Gameplay Overhauls

Write custom C# scripts to alter core game mechanics or introduce new systems.

Workshop Deployment

Package and publish completed mods directly to the Steam Workshop.

Getting started: Open the project with the Unity 2022.3.62f3 editor and open the Assets/GameStartup.unity scene.

README

main branch

U3 SDK

Source code for Unturned, a free open-world zombie survival sandbox game.

Getting Started

Download/clone this repository
Install Unity Hub (required to install engine)
Install the Unity 2022.3.62f3 editor
Optional: if making code changes, select Game development with Unity + .NET desktop development in the Visual Studio installer
Ensure Steam is running and you have Unturned installed (large binary files and mods are loaded from here)
Open the project with the Unity editor
Open the Assets/GameStartup.unity scene
Click play!

Resources

View on GitHub

Recent activity

commits and pull requests

Ignore non-relevant menu banners in SDK
SDGNelson committed 21dd044 · 28d ago
Remove a dependency on macOS build target (Thanks DiFFoZ and kozak145!)
SDGNelson committed ea7b497 · 1mo ago
Add link to video demo
SDGNelson committed b09ec74 · 1mo ago
Add game files
SDGNelson committed daeb7f7 · 1mo ago
Update issue templates
SDGNelson committed 5ce1a17 · 1mo ago
Update README.md (thanks WW-TC!)
SDGNelson committed bcb369b · 9mo ago
Wording adjustments
SDGNelson committed 37238a8 · 43mo ago
Merge pull request #3521 from MoltonMontro/patch-README
SDGNelson committed 255fde2 · 43mo ago
repo not intended for feature requests
MoltonMontro committed 392e0ef · 43mo ago
Update README.md
MoltonMontro committed 06f047e · 44mo ago

Recent open issues

view all

Code for ItemTool.filterRarityRichText is case sensitive
#5526 · 11d ago · by Jdance-Media
Bug
[Crash] Objects (or anything) with more than one text-mesh-pro component crash the server on level load.
#5525 · 12d ago · by DanielWillett · 1 comments
Bug
Rare Workshop Hat "Hooded Hoodlum" has a texture error
#5523 · 23d ago · by Kardiasfx · 1 comments
Bug
Incorrect surface area formula in AACylinderVolume
#5522 · 26d ago · by dumham21 · 1 comments
EXPLOIT-under map glitch
#5521 · 28d ago · by bdstefanov-creator
Bug
Missing file UnturnedPathfinding_ASPFP
#5520 · 28d ago · by GazziFX
Bug

Discussions

all 461

Adding a dialogue box before exiting editor without saving
Ideas · 3y ago · 1 comments
Compare transport connections to ensure no extras with same IP but different port.
Ideas · 1y ago · 2 comments
Feature Request: Allow servers to set a custom storage inventory title
Ideas · 21d ago
i started working on unturned 2 🫵🏽👑
Show and tell · 1mo ago · 3 comments
Proper lighting and partial raytracing
Show and tell · 1mo ago · 1 comments

Releases and announcements

1 total

3.26.3.4 Patchv3.26.3.4Jul 7, 2026
https://blog.smartlydressedgames.com/posts/2026-07-07-3.26.3.4-patch-notes/

Commits per week

last 52 weeks

6 commits in the last 52 weeks.

When work happens

weekday and hour

Commit volume by weekday and hour (UTC). Larger dots mean more commits.

Date	List	Rank	Stars gained
Jul 10, 2026	daily	#5	+4
Jul 7, 2026	daily	#9	+9

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About

License: Other
First commit: Oct 16, 2017
Age: 8y 9m
Default branch: main
Tags: 1
Closed issues: 4,830
Merged PRs: 0
Owner type: Organization

Community health50%

—Contributing guide
—Code of conduct
—Issue templates
—Security policy

Source

18 top-level entries

Browse the full source tree

Languages

C# 98.6%
ShaderLab 1.2%
HLSL 0.1%
C++ 0.0%

Contributors

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1SDGNelson9 commits
2MoltonMontro6 commits

Topics

modding unity3d game-development c-sharp sdk

Links

Data from the GitHub API, refreshed Aug 7, 2026.