Udon Documentation

Browse UdonSharp scripts, reusable Udon systems, official VRChat Udon references, networking guidance, persistence notes, and beginner-friendly world scripting examples.

216 articles
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Find scripts, guides, prefabs, and systems.

216 total 17 guides 199 systems
Start Points

Udon paths

Common Udon Decisions

Answer these before choosing a script.

Should I start with Udon Graph or UdonSharp?

Use UdonSharp when you are comfortable reading small C# scripts or want reusable code. Use Udon Graph when a visual node setup is enough for a small behavior.

Does this need networking?

If the result only affects one player, keep it local. If everyone needs to see the same state, decide between a network event, a synced variable, ownership transfer, or persistence.

When does ownership matter?

Ownership matters when one client is allowed to write or synchronize state for an object. Check ownership before debugging synced variables or shared interactions.

When should I use persistence?

Use persistence for saved preferences, scores, unlocks, progress, or per-player objects that need to survive beyond the current instance.

Can ClientSim replace uploaded testing?

No. ClientSim is useful for fast editor checks, but multiplayer, platform behavior, and final SDK behavior still need VRChat testing before release.

Should I import a prefab first?

Use a prefab when you understand its setup requirements. If the concept is new, build one small local or synced example first so you know what the prefab is solving.

Simple UDON Gimmicks Pack

Simple UDON Gimmicks Pack

Simple UDON Gimmicks Pack is a VRChat creator asset from 74-south on Booth. Check the original listing for current files, setup notes, compatibility, and license details before importing.

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VRC_StarterKit (SDK3)

VRC_StarterKit (SDK3)

VRC_StarterKit (SDK3) is a VRChat creator asset from るーにゃ on GitLab. Check the original listing for current files, setup notes, compatibility, and license details before importing.

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Udon Calibrating Chairs

Udon Calibrating Chairs

VRCStation Chairs that adjust their enter point to align avatars to a better sitting position by aligning the avatars knee position to a target transform.

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UdonToolkit

UdonToolkit

UdonToolkit is a GitHub-hosted collection of UdonBehaviours and editor attributes for VRChat world creators working from a clean VCC project baseline.

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Video Render Texture

Video Render Texture

Output video player into a render texture without using camera

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