Open Source TypeScript Game Engines

Our mission is to create one of the most powerful, beautiful, and simple Web rendering engines in the world. Our passion is to make it completely open and free for everyone. We are artists, developers, creators, and dreamers and we want to make it as simple as possible to enable everyone to bring their ideas to life. With this new version of Babylon.js, we set out to make it even easier to develop with. From a ton of new tools, to improved workflows and features, new documentation and more, it is our sincere hope that Babylon.js 4.2 will make your development process faster and easier while unlocking new simple ways to work. The core focus of Babylon.js 4.2 has been around simplicity. While Babylon.js keeps its code-first approach, we’ve added many tools in the Inspector and enhanced the Node Material Editor to save time to developers and Tech Artists. With the Particle Editor, you can now create and configure particle systems with the click of the mouse.

PixiJS is a fast and lightweight 2D rendering library that lets you create rich, interactive graphics, cross platform applications, and HTML5 games even without prior knowledge of WebGL. It’s a fantastic tool for creating rich, interactive content and with built-in cross platform compatibility and graceful degradation, there’s less work for you and more space for fun and creativity! PixiJS works across all devices and is incredibly fast. If you want to create exceptional experiences without having to deal with dense, low level code, browser inconsistencies, WebGL API or device compatibility, PixiJS is for you! See some great examples and creations made with PixiJS in the official website: https://www.pixijs.com/

3D playground built on three.js and cannon.js. Simple web-based game engine built on three.js and cannon.js focused on third-person character controls and related gameplay mechanics. Mostly a playground for exploring how conventional third-person gameplay mechanics found in modern games work and recreating them in a general way. Raycast character controller with capsule collisions. General state system. You can define your own scenes in Blender, and then read them with Sketchbook. Sketchbook needs to run on a local server such as HTTP-server or webpack-dev-server to be able to load external assets.

The Mirror is an all-in-one multiplayer game engine and virtual world creation platform designed to enable real-time collaborative game development. Originally built on a custom fork of Godot, it combines game creation, editing, networking, and gameplay into a single environment. The platform allows developers, creators, and players to build and modify worlds together in real time without managing complex backend infrastructure. The Mirror supports visual scripting, traditional coding, asset management, physics simulation, and multiplayer networking out of the box. With built-in support for desktop, multiplayer, and VR experiences, it serves as an alternative to platforms such as Roblox and Unreal Editor for Fortnite (UEFN). Its focus on collaborative creation, live editing, and integrated development tools helps streamline the process of building interactive games and virtual experiences.

Planck.js is a JavaScript rewrite/port of the physics engine Box2D, designed to provide 2D rigid-body physics simulation usable directly in web contexts or any JavaScript environment. By offering collision detection, rigid-body dynamics, joints, and simulation capabilities, Planck.js makes it possible for developers to build physically realistic 2D games, simulations, or visualizations in browsers or Node.js without relying on native code. Its API mirrors Box2D’s concepts — bodies, fixtures, shapes, joints — which makes it familiar to users of classic Box2D, while being idiomatic for JavaScript developers. Because it's pure JavaScript, Planck.js integrates easily with HTML5 canvas, WebGL, or other browser-based rendering pipelines, facilitating smooth physics-driven games across platforms. It also is conducive to rapid prototyping and experimentation, since it avoids the complexity of compiling native libraries for web.

ArcadeGPU is a high performance WebGPU game engine inspired by classic techniques that made retro games legendary. Explore demos: https://aliyah-corp.github.io/

An open-source 2D HTML5 game engine. Excalibur was built from the ground up for TypeScript, a typed superset of JavaScript that feels familiar to C#, Java, and other strongly-typed languages. This makes Excalibur code clean, readable, and maintainable. Excalibur has a fully-documented API reference that is automatically kept up-to-date with every version, including the main code branch. Excalibur games compile to modern JavaScript and therefore work in the majority of browsers, including mobile. Since Excalibur games are "just JavaScript", you can use native app packaging wrappers like Apache Cordova, Universal Windows Apps, or Electron to create cross-platform games. Tons of features to help build your game quickly.

Lance is a real-time multiplayer game server framework designed to simplify the development of synchronized online games. It provides an extensible Node.js–based server where all game logic runs centrally. Lance also includes a client-side library that keeps each player’s game state synchronized with the server in real time. To ensure smooth gameplay, it uses efficient networking techniques along with position interpolation and extrapolation. The framework manages user input coordination and shadow objects to reduce the impact of latency. Built-in physics and pseudo-physical movement help create realistic interactions between game entities. Overall, Lance focuses on delivering a smooth visual experience while keeping multiplayer logic reliable.

Turbulenz Engine is a powerful, modular open-source game framework built in JavaScript and TypeScript that enables developers to create both 2D and 3D games that run directly in HTML5-compatible browsers as well as on desktops and mobile devices. The engine is designed to support rich multimedia applications without the need for plugins, using modern web technologies for graphics, physics, input, sound, networking, and asset management. It includes not only the low-level APIs for rendering and resource control but also high-level systems like scene graphs, animation, physics modules, and service APIs that handle game-specific features like leaderboards and multiplayer. Because it’s modular, developers can pick and choose the systems they need or build on top of the framework to create custom tooling and workflows tailored to their projects. Turbulenz also comes with extensive samples and example applications that demonstrate best practices in rendering, physics, user interaction, etc.

The project implements a lightweight but powerful engine for creating turn-based games (board games, card games, turn-based strategy, etc.) in JavaScript. With boardgame.io, you define the game logic in pure functions: you describe how the game state changes when a move is made, and the framework handles all the rest (state management, synchronization, storage, multiplayer, etc.). This abstraction lets developers focus on the rules and mechanics rather than on networking, persistence or UI plumbing. It supports both local games and online multiplayer across clients, and can be used with different view layers — e.g., vanilla JS or a UI framework like React or React Native. It also offers tools to help with prototyping, debugging, logging, replaying game states, and even simple AI bots. Because of its simplicity and flexibility, boardgame.io is widely used for rapid prototyping of new game ideas or building full multiplayer board games.