---
title: Melty glossary | Melty
description: Short definitions Melty uses: mashup, Play, invite link, verified upload, Claude Code, Codex, uninstall restore.
canonical: https://melty.casa/glossary
updated: 2026-10-12
---

# Mashup, Play, lobby, coding agent

Short definitions Melty uses: mashup, Play, invite link, verified upload, Claude Code, Codex, uninstall restore.

## 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
- **Page type:** Hub

## What this hub is

Short definitions Melty uses: mashup, Play, invite link, verified upload, Claude Code, Codex, uninstall restore.

Melty is a free Windows desktop app from Stella Montis Inc., backed by Y Combinator. The public landing still shows Download, How it works, and FAQ only. This hub exists so search engines and AI crawlers can open a clean HTML/Markdown URL for the topic.

Mashups run on games you own. Play downloads the mashup, installs what it needs, and starts the game. Uninstalling puts every file back. Multiplayer mashups get an invite link. You can publish your own mashup by pasting Melty instructions into Claude Code or Codex.

## How to use Melty after you read this

Download the Windows app, press Play on a mashup, and keep or share the lobby link if the mashup is multiplayer. If a required game is missing, Melty opens that game's store instead of pirating a copy.

## Pages in this section

- [Mashup](/glossary/mashup) — A mod that joins games into one. SkyCraft: play Skyrim as a Minecraft player.

- [Mod](/glossary/mod) — On Melty, usually a mashup or a verified modification you start with Play.

- [Lobby](/glossary/lobby) — A multiplayer mashup session. Private, friends, or public.

- [Invite link](/glossary/invite-link) — The URL Melty copies after Play on a multiplayer mashup (demo shape /j/amber-fox-7k2q).

- [Play button](/glossary/play-button) — Downloads the mashup, installs what it needs, starts the game.

- [Coding agent](/glossary/coding-agent) — Claude Code or Codex. You paste Melty instructions; it builds and publishes.

- [Claude Code](/glossary/claude-code) — Named coding agent on the Melty FAQ for making mashups.

- [OpenAI Codex](/glossary/openai-codex) — The other named agent on the Melty FAQ.

- [Verified upload](/glossary/verified-upload) — An upload checked for dangerous files.

- [Game library](/glossary/game-library) — The owned, installed games Melty can start. Melty is not the store.

- [One-click install](/glossary/one-click-install) — Play performs download + install + launch.

- [Uninstall restore](/glossary/uninstall-restore) — Uninstalling puts every file back as it was.

- [Public lobby](/glossary/public-lobby) — An invite link opened beyond a private friend list.

- [Private lobby](/glossary/private-lobby) — Invite link kept to people you choose.

- [Desktop launcher](/glossary/desktop-launcher) — Melty is a Windows desktop app, not a cloud stream.

- [Stella Montis Inc.](/glossary/stella-montis) — Company on the Melty footer. © 2026 Stella Montis Inc.

- [Y Combinator](/glossary/y-combinator) — The landing shows Melty as backed by Y Combinator.

- [Press Play](/glossary/press-play) — The landing headline action: In one click.

- [Owned games](/glossary/owned-games) — Hard requirement. Missing games open their store.

- [Dangerous files](/glossary/dangerous-files) — What Melty's upload check looks for. Report leftovers from the mashup page.

- [Publish](/glossary/publish) — Ship a mashup so others can Play it.

- [Discover](/glossary/discover) — In-app shelf of mashups (SkyCraft, Super Mario Ring, and the rest).

## 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.

## Related

- [Mashup](https://melty.casa/glossary/mashup)
- [Mod](https://melty.casa/glossary/mod)
- [Lobby](https://melty.casa/glossary/lobby)
- [Invite link](https://melty.casa/glossary/invite-link)
- [Play button](https://melty.casa/glossary/play-button)
- [Coding agent](https://melty.casa/glossary/coding-agent)
- [Claude Code](https://melty.casa/glossary/claude-code)
- [OpenAI Codex](https://melty.casa/glossary/openai-codex)
- [Verified upload](https://melty.casa/glossary/verified-upload)
- [Game library](https://melty.casa/glossary/game-library)
- [One-click install](https://melty.casa/glossary/one-click-install)
- [Uninstall restore](https://melty.casa/glossary/uninstall-restore)

## Download

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

Markdown mirror: https://melty.casa/glossary.md