Turn a prompt into a game

An AI game generator takes a text prompt and gives back a game. Modder's generates the whole thing, not a mock-up: the rules, the world, the controls, the score, the sounds and the start screen, running in your browser. Then you keep the project and can ask for changes as many times as you like.

Updated Oct 27, 2026Tested by the Modder team

What a good prompt turns into

Each of these fits in one sentence. Open one and think about how you'd describe it.

Neon NoodlesModder Originals5

Blob GobbleModder Originals3

Fruit SlashModder Originals1

Road HopperModder Originals

Spiral DropModder Originals

Turf GrabModder Originals1

On this page

From prompt to game
Prompts that work, and prompts that don't
What you get back
Good at, and limits
Questions

By the numbers

A new game on Quick build: ~7 min
A new game on Long build: ~25 min
Games it builds, played in the browser: 2D and 3D
Where the games play, no download: Phone and desktop
Players in one online room, bots in empty seats: Up to 10
Per game, up to 2 MB each: 2,000 files

Build times are the builder's own estimates for a new game; the rest is from Modder's limits on Oct 28, 2026.

From prompt to game

Write the prompt like a game pitch
The best prompts say three things: what the player does with their hands, what they're aiming for, and what stops them. "Steer a snake, eat to grow, don't hit anyone" beats "a fun snake game". Mention a look if you have one in mind (neon, cozy, low-poly) and the generator will hold to it.
Let the generator plan, build and test
It turns the prompt into a short plan, writes the game, then plays it in a headless browser with real input. When something is off (the snake turns too slowly, the leaderboard overlaps the score) it fixes it and plays again. You can watch each step in the Studio's chat.
Prompt again to change it
The game isn't a one-shot. Every message after the first edits the same project: "add a speed boost pickup", "make the arena smaller", "give the bots names". Versions are saved as you go, so trying a wild change costs you nothing but a few credits.

Prompts that work, and prompts that don't

Specific verbs work. Swipe, drift, stack, dodge, spray, merge: each one tells the generator what the controls and the main loop should be. A named comparison works too, as long as it's about the mechanics: "a three-lane runner like the train-track ones" gives it a clear target without asking for anyone's characters or art.

Vague mood words on their own don't work well. "An epic adventure" leaves every decision to the generator, and you'll get something generic. So does a list of twenty features in one prompt. Start with the core loop, play it, then add features one message at a time. That's also how the games on this page were built.

What you get back

A project, not a video or a screenshot. It has a start screen, the game, a way to win or lose, and a restart. Scores and progress save in the browser. You can open every file, see what changed in each version, and once it's finished it goes live on its own page on Modder by itself.

What it does well, and what it doesn't

Good at

Turning a one-line idea into a complete loop: start, play, score, game over, again.
Holding a look you name (neon, toon, low-poly, realistic-ish) across the world, menus and effects.
Taking follow-up prompts and changing the same game instead of starting over.

Current limits

It won't recreate a specific commercial game's characters, art or name. Describe the mechanics instead.
A prompt with twenty features at once tends to come out shallow. One loop, then additions, works better.
Generation takes minutes, not seconds: the generator plays and fixes the game before handing it over.

Questions

What should I write in the prompt?

What the player does, what they're trying to achieve and what gets in the way, in one or two sentences. Add a visual style if you have one. You can always add more in later messages.

Can I generate a game from a picture?

Not as the main input today. Describe the picture in words. Once a build is running you can ask for specific art and the builder can paint textures, sprites and key art for it.

Does the generator make the art and sound too?

Yes. It uses free open-licence models, textures and sounds where they fit and generates images, sprites, 3D models and sound effects where they don't.

Can I generate a multiplayer game?

Yes. Choose Online with friends (rooms of up to 10 with an invite link, bots fill empty seats) or One keyboard (2 to 4 players) under the prompt box before you send it.

Making games on Modder