Game Forge

Describe a game. Get something playable — built live in your browser, the same way MigaBuilder writes a website.

Connection

Used only to call the provider above directly from your browser. Never stored.

The game

Picking a genre gives the AI real technical scaffolding for that kind of game (physics, spawning, grid logic) instead of guessing — usually the single biggest jump in quality.

Upload short clips or record your voice — they're baked directly into the game file and never sent anywhere, including to the AI provider. Give each one a short name; the AI uses the name to decide when to play it (e.g. "jump", "win", "taunt"). Keep clips short — they're embedded as-is.

Be specific about controls and the win condition if you have one in mind — the AI follows what you give it. Expect simple, playable mechanics with shapes and emoji for characters, not illustrated art.

Want a 3D game instead? Try 3D Game Forge: runner, racer, maze, platformer or arena, with a level editor.

GAME FORGE — NOTHING GENERATED YET
Nothing here yet. Describe a game on the left and click Generate — it'll show up here, ready to play.

🎛️ Tune the game — no code needed

Drag a slider and the game changes instantly while you play. Your settings are saved into the downloaded game.

Sliders appear here once a game is loaded.

Pictures are read on your device and baked into the game file — nothing is uploaded. The embed code is one self-contained block you can paste into any site that accepts HTML (WordPress, Wix, Blogger, Notion embeds…).

🔊 Retro sound effects — no files needed

8-bit sounds made from pure code with the browser's AudioContext. Press ▶ to hear one, 🎲 for a new variation you like better. Every game gets them built in — the game plays them with sfx("jump"), sfx("coin") and so on.

🧍 Sprite sheet animator

Drop one PNG with all your character's poses in a grid, say how big each frame is, and pick which frames are Idle, Walk and Jump. The player then animates by itself — walking while an arrow key is held, jumping on Space/Up.

About Game Forge

Game Forge turns a written idea into a playable browser game. Describe the game, its controls and goal, and the AI writes it while you watch; then play-test it and ask for changes.

How to use Game Forge

  1. Describe the game, controls, goal, art style, and difficulty.
  2. Press “Generate game”.
  3. Play-test it, request changes, and download the finished game.

Can I download the game I make?

Yes. When you are happy with it, download the finished game as an HTML file that runs in any modern browser, offline too.

Is 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.

Related tools: 3D Game Forge · Music Forge · Picture Forge

View source on GitHub (MIT licensed) →