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The AI game maker that plays its own games

An AI game maker is a tool that writes a working game for you from a description. On Modder you type an idea like "a pressure washing game where every surface gets cleaner as you spray", and an agent plans it, writes the code, sets up the levels and sound, then plays the game itself to find what's broken before you ever see it.

Updated Tested by the Modder team

Play a few first

This is the bar the maker is built against. Play one for a minute, then describe yours in the box above.

SpotlessModder Originals4SupersonicModder Originals8Burger TycoonModder OriginalsNeon NoodlesModder Originals5Metro DashModder Originals2Sus StationModder Originals4
On this page
  1. How a build goes
  2. What makes this different from a chatbot writing code
  3. Who it's for
  4. Good at, and limits
  5. 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 .

How a build goes

  1. Say what you want

    One sentence is enough to start. Say what the player does and what makes it fun: who you are, what you're trying to do, what gets in the way. Pick Single player, Online with friends or One keyboard under the box, and that's the whole setup. You see an estimate of the credits before anything runs.

  2. Watch it make the game

    The builder writes the project file by file in the Studio while you watch: the world, the scripts, the menus, the score. It pulls free models and textures from open libraries, paints the art it can't find, and plays the game in a real browser, looking at screenshots and fixing what it sees. A first build usually takes five to twenty-five minutes.

  3. Play it, change it, share it

    When it's done the game runs right there. Tell it what to change in plain words ("make the enemies slower", "add a shop") and it edits the same project; every version is kept, so you can go back. When it's finished it goes live on Modder by itself, with its own page where anyone can play it free; later changes update it when they pass.

What makes this different from a chatbot writing code

Ask a general chatbot for a game and you usually get one long file that runs, sort of, until you try to play it. The hard part of game making isn't the first draft. It's the hundred small things: the jump that feels floaty, the button that hides behind the score, the level you can't finish. Modder's maker spends most of its time there. It drives the game with real key presses and mouse movement, reads the errors, checks the frame rate and looks at what's on screen.

It also works inside a game engine instead of starting from nothing each time. The engine handles physics, cameras, input, saving, sound and the menus, so the agent's code is about your game rather than plumbing. That's why a Modder game can have a first-person camera, a shop, a save file and a working pause screen without you asking for any of it.

Who it's for

People with a game in their head and no time to learn an engine. Teachers who want a quick game about the lesson. Developers who want a playable prototype of an idea by lunch. Friends who want something silly to play together tonight. You don't need to read the code, but it's all there in the Studio if you do, and you can edit any file by hand.

What it does well, and what it doesn't

Good at

  • Short, replayable games: arcade, .io arenas, runners, tycoons, simulators, car and kart games, party games.
  • 3D worlds with physics, any camera (first person, third person, top-down, side-on), and 2D-style games drawn with flat sprites.
  • Menus, scores, shops, upgrades and saves without you asking.
  • Online rooms for up to 10 friends with an invite link, with bots filling empty seats, or 2 to 4 players on one keyboard.

Current limits

  • Long story games, big open worlds and anything with hours of hand-made levels are beyond a single build. They come out thin.
  • Games are made for a computer first: keyboard and mouse. Touch works as a fallback, not as a phone-first design.
  • No export to consoles or app stores. Games live on Modder; the Max plan lets you download the code.
  • Making games needs a plan or a credit top-up. Playing is free.

Questions

How long does it take to make a game?

A first build usually takes five to twenty-five minutes, depending on how big the idea is. Changes after that are faster, often a few minutes each.

Do I need to know how to code?

No. You describe the game and ask for changes in plain words. The code is visible and editable in the Studio if you want it, but you never have to open it.

Is the AI game maker free?

Playing every game on Modder is free with no account. Making and remixing games needs a plan or a one-off credit top-up; the pricing page has today's prices. A build that fails costs nothing.

Were the games on this page made by the AI?

The Modder Originals were built by our team as the quality bar the maker is measured against. Games marked as made by players come straight from the maker.

Who owns the games I make?

You do. On a paid plan you can sell what you make.

Making games on Modder

Play first, then make your own

Playing every game is free. Making games needs a plan or a one-off credit top-up.

See plans and creditsPlay games first

Make other kinds of games

Every kind of game

More on Modder

Guides

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