A JavaScript ecosystem for making games
Write in JS, deploy everywhere via Unity.
import { render, Button } from "onejs-react"
import {
GameObject, PrimitiveType, Random, Rigidbody, Vector3
} from "UnityEngine"
function dropBall() {
const ball = GameObject.CreatePrimitive(PrimitiveType.Sphere)
ball.transform.position = new Vector3(Random.Range(-2, 2), 6, 0)
ball.AddComponent(Rigidbody)
}
render(<Button text="Drop Ball" onClick={dropBall} />, __root)TutorialsDocs
NameplatesDrive a 3D scene from JS and pin live nameplates on every character.
InventoryDrag-and-drop game UI with typed slots, smooth motion and live theming.
Steam ChartsA data app with fetch, async React state and vector bar graphs.
ThemingBuilt-in themes, your own brand theme, and the premade theme packs.
What we maintainGitHub
- OneJS3.9.15The Unity package. Runs TypeScript and React in Unity, on QuickJS or the browser's own engine.
- onejs-react0.4.3The React 19 renderer for Unity's UI Toolkit.
- onejs-ui0.0.6Themeable components for OneJS apps.
- onejs-unity0.11.2Build plugins: USS, CSS modules, Tailwind and imports from C#.
- onejs-sl0.9.2A small shader language, compiled to HLSL, WGSL and GLSL ES.
- unity-types6000.5.5TypeScript types for Unity 6000.5.
- ojplay0.12.2OJPlay from the terminal: build, run and test games.
- UnityMCP1.2.0Lets AI assistants work in the Unity editor, over MCP.
OJPlay alphaAll games
Fortnite HUDA Fortnite style HUD: shield and health bars, an inventory bar, and a panning minimap.
Overwatch HUDAn Overwatch style HUD: a segmented health bar, an ultimate meter that crackles when full, and abilities on cooldown.
On JuiceboxMore
- Gang of Dragon developer Nagoshi Studio shutters months after NetEase cut funding gamesindustry.biz
- PlayStudios closes Tetris Block Party after cutting 177 jobs and shuttering four studios mobilegamer.biz
- BioWare co-founder: game execs "have never made a game" and don't get it pcgamer.com
- Vibe-Coding a Game in 2026: What AI Builds, What Breaks vlstudio.app
- Games made with Unity: October 2026 in review unity.com