Three.js games with AI: creation, assets and multiplayer

Making Three.js games with AI

Three.js provides scenes, cameras, materials and rendering for browser 3D. A coding assistant can help write and revise a project that uses it. The resulting game depends on the code, assets and services you build around the library.

Gessa uses Three.js within a browser game engine. Its free built-in AI, asset generation, visual editing, code, multiplayer and collaboration connect game creation to a public play experience.

What to plan around the rendering library

For a custom Three.js game, plan input, game rules, physics, asset loading, saves and any multiplayer services. AI agents can help implement and test these systems; assess the actual result rather than assuming a generated project has or lacks them.

In Gessa, the engine provides the connected project and runtime. You can generate models, textures and audio, edit behavior, save and version authored project resources, and test the game as you build.

Three.js on WebGL and WebGPU

Three.js offers WebGLRenderer and WebGPURenderer. WebGPURenderer uses WebGPU where available and supports a WebGL2 backend. Its material and rendering workflow has differences to check when migrating an existing project.

Gessa uses the Three.js WebGPU renderer with a WebGL2 fallback. Test your scene on the browsers and devices you intend to support. The initialization below illustrates the renderer setup; add a scene, game behavior and the rest of your application around it.

import * as THREE from "three";
import { WebGPURenderer } from "three/webgpu";

const renderer = new WebGPURenderer({ antialias: true }); // native WebGPU, WebGL2 fallback
await renderer.init();
document.body.appendChild(renderer.domElement);

const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(60, innerWidth / innerHeight, 0.1, 100);
renderer.setAnimationLoop(() => renderer.render(scene, camera));

Four ways to build with AI

1. A custom project. Work with an AI coding assistant on a Three.js application when you want to manage its source and infrastructure directly.

2. A starter kit. Begin with an existing project structure, inspect its dependencies and license, and adapt it to your game.

3. A hosted creation platform. Evaluate its editing, assets, publishing and multiplayer workflow using the game you want to make.

4. Gessa. Make and edit games with free built-in AI in a browser engine, generate assets in the project, collaborate and publish a play page for friends. Gessa uses its own project and script models; an existing Three.js application is not a drop-in project import.

Models, textures and audio for your game

Build an asset workflow alongside the rules. In Gessa, generate models, textures, images and audio as you create the game. Its MCP tools also let compatible coding assistants request assets for their workflows.

For a custom Three.js project, load suitable glTF/GLB models with the appropriate loader and test materials, scale and performance in your scene. Gessa has a browsable asset library with per-asset licenses. Check the license and required attribution for each asset you reuse.

Multiplayer, collaboration and public play

Gessa provides server-authoritative multiplayer and collaborative project editing. Define what players share, then test the game with multiple participants: interactions, shared progress and the win condition should behave as intended.

Publish a browser play page and open it separately from the editor. Share it with friends, check the controls and loading experience, and refine the game from their feedback. The built-in AI is free and does not require a separate external AI account.