Create

Build fully your way —
or take a quicker on-ramp

The workflow is part of the product. Every path ends the same way: a prompt you hand to your coding agent, and a game it can prove works.

01 · Minutes

Quickstart with default style

Start with the batteries in the box — a rigged hero, the Regalia palette, juice and synth audio. Your agent assembles a working game fast.

Start here

02 · An evening

Design with the Codex

Compose a design from 216 modules — an anchor, a genre, systems and a twist — then prototype it in Regalia once the idea holds.

Start here

03 · No rails

Start from scratch

An empty, solver-ready project. Bring your own style and draw every asset as code — the proofs stay, the look is yours.

Start here

04 · Slow burn

Start from a spark

No pitch, no plan — a character, a chord, a card you can't put down. Iterate the atom in the Workshop until it tells you what game it wants to be.

Start here

Not sure? Take the quickstart — the style is a default, not a wall. You can swap it out later.

And the instruments you'll use along the way

Sound, as code

One-line SFX specs and whole composed scores, synthesised live — hear the engine play on the page, no samples anywhere.

Hear it

Workshop — the playtest loop

Every human playtest becomes a replayable artifact your agent reads — live knobs, session scrubbing, and accepted values written back to source.

See the loop

Using Claude Code?

Install the Hayao plugin

The workflow above, packaged and enforced: authoring skills, commands like /hayao:new-game and /hayao:inspect-api, and a determinism gate — a hook that runs the proof harness and blocks the agent from finishing until it passes. Verification stops being a habit and becomes a wall.

/plugin marketplace add hellojanpacan/hayao-js
/plugin install hayao@hayao