Make a 3D game from a sentence: runner, racer, maze, platformer — 3D Game Forge

🎵 Game music Make a game loop ↗ 📂 Open

How to play

WASD or arrow keys to move and turn · Space to jump (in the arena: zap) · drag with the mouse to look around · on a phone use the on-screen buttons. Runner: ← → change lane, Space jumps. Racer: ↑ accelerate, ↓ brake, ← → steer.

How it works

The AI does not write thousands of lines of code that might break. It writes a short game description — template, world, hero, enemies, speeds and goal — and a built-in 3D engine (three.js) turns it into a game that always runs. You can change everything afterwards with the menus, sliders and level painter. The share link holds the whole game inside it, and the download is one HTML file that works on any website or offline (it loads three.js from a CDN).

🔒 Games are made and played in your browser. Only your description is sent to the AI you choose.

About 3D Game Forge

3D Game Forge is a free 3D game maker in your browser. Describe a game or start from a template such as an endless runner, kart racer, maze or arena, then change the world, hero and enemies and paint your own level.

How to use 3D Game Forge

Describe your game in a sentence, or pick a template such as the endless runner, kart racer or maze.

Press “Make my 3D game”.

Press Play, then change the world, hero, enemies and sliders, paint your own level, and copy the share link or download the game.

Can I share my 3D game?

Yes. Copy a share link so others can play it, or download the whole game as one HTML file.

Is 3D Game Forge free?

Yes. It is free to use, with no account, no watermark and no paywall. The AI uses a free shared allowance; if it is busy or at its daily limit, try again later or add your own Gemini key.

Are my files uploaded?

Only the text you give the AI leaves your device: it is sent to Google’s Gemini model through MigaBuilder’s free AI service, or through your own Gemini key if you add one. Editing, previews and downloads all happen in your browser.