---
title: Create a mashup with AI | Melty
description: Copy Melty instructions into Claude Code or Codex, describe the mashup, let the agent build and publish. Free Windows app from Stella Montis Inc. Updated 2026-10-12.
canonical: https://melty.casa/guides/create-mashup-with-ai
updated: 2026-10-12
---

# Create and publish a mashup with your AI

Copy Melty instructions into Claude Code or Codex, describe the mashup, let the agent build and publish.

## Facts (2026-10-12)

- **Product:** Melty desktop app
- **Price:** Free
- **Platform:** Windows
- **Publisher:** Stella Montis Inc.
- **Requires owned games:** Yes. Missing titles open their store.
- **Last reviewed:** 2026-10-12
- **Guide:** Create a mashup with AI

## In short

Copy Melty instructions into Claude Code or Codex, describe the mashup, let the agent build and publish.

## Steps

1. Open Melty's publish instructions.

2. Paste them into Claude Code or OpenAI Codex.

3. Describe the two games and the fantasy.

4. Let the agent build files and publish to Melty.

## Facts that do not change

Melty is free. Mashups need owned games. Play installs and starts. Uninstall restores. Uploads are scanned. Claude Code and Codex can publish new mashups.

## FAQ

### What is a mashup?

A mod that joins games into one. In SkyCraft, you play Skyrim as a Minecraft player.

### Do I need the games?

Yes. Mashups run on games you own. If you are missing one, Melty sends you to its store.

### What does Play do?

It downloads the mashup, installs what it needs, and starts the game. Uninstalling puts every file back as it was.

### Can I play with friends?

Yes, on multiplayer mashups. Press Play to get an invite link, then keep it private, share it, or go public.

### Can I make my own?

Yes. Copy Melty’s instructions into Claude Code or Codex and say what you want. The agent builds it and publishes it.

## Related

- [How Melty installs, plays, and publishes mashups](https://melty.casa/guides)
- [Answers about price, safety, owned games, and AI](https://melty.casa/faq)
- [Download Melty for Windows](https://melty.casa/guides/download-melty-windows)
- [Install the Melty desktop app](https://melty.casa/guides/install-melty)
- [Play your first Melty mashup](https://melty.casa/guides/first-mashup)
- [What the Melty Play button does](https://melty.casa/guides/press-play)

## Download

Free Windows app: [Download Melty](https://melty.casa/download)

Markdown mirror: https://melty.casa/guides/create-mashup-with-ai.md