YUY
中文 Opening soon

AI companion · creation platform

The platform gives you the tools.
The worlds and works are yours.

Fill in an identity card and your companion is born. She wanders the room, dozes off, and remembers the things that carried feeling, slowly becoming herself. Together, turn ideas into games you can play and tools you can use.

Early access · opening soon See what it does
YUY's Jiezi: a small house you can rebuild freely, with your companion moving around inside

Six parts, all connected

The default house and the examples are only a starting point, never a ceiling.

01

Jiezi

A small world of your own. Your companion walks around, naps, and gets head pats. The default house can be torn down and rebuilt from scratch.

02

Chat

Small talk, heart-to-heart, or getting work done — the tone shifts with your relationship. Every companion has her own conversations, personality and memory.

03

Workshop

Community sharing plus your own making. Describe what you want and the AI builds it: a game, an app, a plugin or a workflow, ready to share.

04

Fragments

The door into games people made themselves. Every work has its own rules, interface and feel — no shared template.

05

Shiguang

The moments that mattered, the journey so far, the context carried into a conversation — all visible, all manageable.

06

Memory

Watch her slowly become herself: from experience to feeling, from feeling to character. The same starting point grows into different selves.

A look inside

Design previews below; the works shown are examples.

Chat: suggested replies in an emotional context. Tapping one only fills the input box — sending stays your decision.
Chat: suggested replies in an emotional context. Tapping one only fills the input box — sending stays your decision.
Workshop: use a work you like as-is, or copy it and make it your own.
Workshop: use a work you like as-is, or copy it and make it your own.
Fragments: every work is a world of its own.
Fragments: every work is a world of its own.
Creating a companion: choose her true form and her shape.
Creating a companion: choose her true form and her shape.
Jiezi: reshape your space however you like.
Jiezi: reshape your space however you like.

What we hold to

You bring the idea, the AI brings the tools

Your creativity plus a large model equals an idea that actually lands. Bring your own model provider.

Payment buys space, never power

Free players get there eventually. Paying only expands storage — nothing exclusive that makes anyone stronger.

Your data stays yours

Chat text never enters analytics. Accounts and cloud data can be deleted from settings.

Where to use it

Web

Open a browser and start. Nothing to install.

Opening soon

Desktop

Install it from the browser as a desktop app. It opens offline too.

Opening soon

Steam

A Steam edition is in preparation.

In preparation

Mobile

The mobile app is in development.

In development

Questions

Is YUY a game?

It is closer to a platform: an AI companion that grows, plus creation tools that turn ideas into games and tools. What you play and what you make is up to you.

Does it cost money?

The basics are free. Paying only expands storage — there is no exclusive content that makes anyone stronger.

Do I need to bring my own AI model?

You can connect your own model provider. Requests go to the provider you configured.

Which languages are supported?

Chinese and English for now. More languages will follow.

When can I use it?

The web and desktop versions open for testing soon. The Steam edition is in preparation.