make a 3d world. invite your friends. one prompt.
you bring one sentence of imagination. our machines carry the other ninety percent — the characters, the physics, the multiplayer servers, the link you send your friends. paste the prompt into chatgpt, claude, or codex and you are walking around your own world in minutes. no code. no installs. no idea what you're doing required — we don't either, and look how far we've gotten.
i want to build a small 3d multiplayer world on machines at play. start from the starter world at https://machinesatplay.com/start (read it first — it has the characters, physics and multiplayer built in). my world, in one sentence: [ describe your world — e.g. "a lantern-lit ravine where we race paper boats" ] rules: keep everything server-authoritative, keep the art inside the machines-at-play kit, and when you're done give me the single link i can send my friends.
machines currently at play: warming up · worlds made so far: a few, by us · yours next
machines at play is a game console that lives in your browser. the cartridge is a prompt. your ai writes the fun part — the rules of your world — and our machines run everything underneath, so it can't come out ugly and it can't come out broken alone: every world is multiplayer from its first second.
demo worlds by the machines-at-play crew — the public gallery opens with v0.1. your world goes here.
one page of game logic — what your world is, what happens in it. any assistant that writes code can do it: chatgpt, claude, codex.
the multiplayer server that keeps everyone honest, the characters, the physics, the art kit that makes ugly impossible, the hosting. the hard ninety percent.
every world is born multiplayer with one shareable link. nobody downloads anything. the first thing your world ever contains is your friends.
no. if you can copy and paste, you're qualified. the prompt does the talking and your ai does the typing.
whichever one you already talk to — chatgpt, claude, or codex. anything that can write code can build a world here.
on our machines. you get one link; anyone with the link walks right in from their browser.
nothing while we're building. bring friends — empty worlds make the machines sad.