Type your idea in one line. It plans the game, then builds the real code step by step — and the game runs right there as it's made. Draw your own sprites in the built-in pixel editor, tweak a number, watch it reload. When it plays the way you want, download the whole project — the code is yours.
Chat on the left, the code in the middle, your game running on the right. Change a number, it reloads. Break something, the error comes straight back to the chat. Draw a sprite in the built-in pixel editor and it drops into the game. Download the project when it plays the way you want — no engine to install, nothing to compile.
Pure HTML5 and vanilla JS. No engine, no dependencies — every line is yours to read.
Scenes, arcade physics, tilemaps and tweens, wired the way the engine expects.
Scene, camera, lighting and a fixed-step loop. First or third person, in the browser.
Type one line. Here's the kind of thing that comes back.
A platformer where you rescue cats from rooftops
A top-down arcade shooter with waves and a boss every 5 rounds
A puzzle where you rotate gravity to guide a ball to the exit
An endless runner through a neon city at night
A retro brick-breaker with power-ups and combos
A cozy farming sim with day/night cycles
A 2D dungeon crawler with rooms and loot
A tower-defense with upgradeable turrets
A first-person maze you explore in 3D
From one line of text to a game you can play — in three moves.
Write your game idea in one line. It returns a full plan first — mechanics, controls, visual style, scope — before writing any code.
It writes the real game files for you, phase by phase. You advance one step at a time and play the game as it grows — nothing to compile or install.
Play each step as it's built, fix any issue in one tap, then download the whole game as a .zip. The code is yours.
Most AI tools dump one giant file that's truncated, half-finished, or full of "TODO" stubs. This engine is built to avoid exactly that.
A full spec — architecture, data model, screens, tiers — is produced and confirmed before a line of code.
Each generated step is checked before you move on, so a broken part is caught early — not at the end.
Every file is verified complete on write. If output is cut off, it resumes exactly where it left off.
It refuses "// TODO: implement" placeholders and emits real, complete logic instead.
Describe a problem and get a precise, targeted fix back — and it remembers the lesson for the rest of the build.
Long builds survive across sessions: pick up where you stopped and regenerate any single step on demand.
Everything that matters when what you're building is meant to be played.
The game runs in the browser as it's built — you're never staring at code wondering if it works. Play it, then move on.
Draw sprites right in the workspace — pencil, fill, flip, rotate, real-time preview — and they save straight into your project's assets.
Describe an asset and generate it on the spot, then drop it into the game. No leaving the editor to hunt for art.
Flip on collision boxes over the running game to see exactly why something isn't landing where you expect.
Real, readable source you download as a .zip. No engine lock-in, no hosted black box. Edit and publish it anywhere.
Use your own Claude or DeepSeek key — stored encrypted, billed by your provider. No markup, no middleman.
Simple commands drive the whole build.
Pick the one that fits your idea. Each ships a clean project structure, docs and deploy notes from the start.
A complete 2D browser game in pure HTML5 Canvas and vanilla JavaScript — game loop, sprites, input, collision, audio, scenes and HUD. No engine, no framework, no build step. Optional PHP backend for highscores and cloud saves, delivered ready to drop on any host.
A complete 2D game on Phaser 3 — scenes, arcade physics, tilemaps, sprites, animations, particles and sound, wired the way the engine expects. Loaded from CDN, no build step, runs from any static host. Optional PHP backend for highscores and cloud saves.
A complete 3D browser game on Three.js — scene, camera, lighting, meshes, a fixed-step game loop, collision, first or third person controls and sound. Loaded from CDN via import map, no build step, runs from any static host. Optional PHP backend for highscores and cloud saves.
No stack matches that search.
Buy the exact instructions + knowledge files behind any stack and run them yourself — in Claude, the API, or any AI coding tool. Unlimited use, no per-run fee to us.
A complete 2D browser game in pure HTML5 Canvas and vanilla JavaScript — game loop, sprites, input, collision, audio, scenes and HUD. No engine, no framework, no build step. Optional PHP backend for highscores and cloud saves, delivered ready to drop on any host.
A complete 2D game on Phaser 3 — scenes, arcade physics, tilemaps, sprites, animations, particles and sound, wired the way the engine expects. Loaded from CDN, no build step, runs from any static host. Optional PHP backend for highscores and cloud saves.
A complete 3D browser game on Three.js — scene, camera, lighting, meshes, a fixed-step game loop, collision, first or third person controls and sound. Loaded from CDN via import map, no build step, runs from any static host. Optional PHP backend for highscores and cloud saves.
Describe the AI assistant or system prompt you need. We generate a custom instructions + knowledge pack for it, built with the same methodology behind our own stacks — priced by complexity, not by luck.
Yes. You get real source code with no platform lock-in — edit it, host it, and publish it anywhere, including commercially.
No. You describe the game in plain words and play it as it's built. If you do code, the whole project is real, readable source you can edit — not a locked drag-and-drop black box.
Yes. You bring your own Anthropic (Claude) API key, so usage is billed to you directly by your provider. Your key is stored encrypted and never shared.
Use BUGFIX — describe the issue and get a precise fix back. You can also resume a step that was cut off, or regenerate any single step without losing your place.
No. Planning, generating and downloading all happen in your browser, on a computer or phone — there are no tools to install to get your code. The finished game is a browser game — to host your own copy you just serve the files over HTTP, and each project's README shows the one command for that.
A full game is too large to output in one go, so it's split into ten steps. Building them one by one is deliberate: you play each step as it lands, so a problem shows up immediately — not buried in a broken final zip.
Each game downloads as a .zip with a README. Browser games (Canvas, Phaser, Three.js) just need to be served over HTTP — the docs show the one command to do it, and you can host the result anywhere static.
2D and 3D browser games — platformers, shooters, puzzles, runners, tower-defense, dungeon crawlers, first-person mazes, and more. Built with HTML5 Canvas + vanilla JS, Phaser 3, or Three.js for 3D.
Email us at support@ai-game-builder.online and we'll get back to you.
Create an account, add your AI key, and build your first game today.
Make a game freeAI Game Builder is an AI game generator that turns a one-line idea into a real, playable browser game — built with HTML5 Canvas and vanilla JavaScript, Phaser 3, or Three.js for 3D. Draw your own sprites in the built-in pixel-art editor or generate art with AI, watch the game run as it's built, and download the full source when it's done. If you're looking for an AI game builder, a text-to-game tool, or a way to make a 2D or 3D game without an engine to install, the difference here is simple: every game is real, editable code you own — not a hosted black box you rent.