---
title: Portal 2 + Half-Life 2 — Portal 2 + Half-Life 2 mashup | Melty
description: Portal 2 + Half-Life 2 is a Melty game mashup of Portal 2 and Half-Life 2. The Portal Life idea on Portal 2's chambers plus City 17. Free on Windows. You must own both games.
canonical: https://melty.casa/mashups/portal-2-hl2
updated: 2026-10-12
---

# Portal 2 + Half-Life 2: Portal 2 + Half-Life 2

Portal 2 + Half-Life 2 joins Portal 2 and Half-Life 2. The Portal Life idea on Portal 2's chambers plus City 17.

## 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
- **Mashup:** Portal 2 + Half-Life 2
- **Game A:** Portal 2
- **Game B:** Half-Life 2
- **On Melty landing:** Combination page — build/play via Melty

## Portal 2 + Half-Life 2 facts (2026-10-12)

| Item | Value |
| --- | --- |
| Name | Portal 2 + Half-Life 2 |
| Joined games | Portal 2 + Half-Life 2 |
| Launcher | Melty for Windows |
| Price | Free |
| Owned copies required | Yes |
| Play | Downloads mashup, installs, starts host game |
| Uninstall | Restores the game files Melty changed |
| Multiplayer | Invite link on multiplayer mashups |

## Play a Portal 2 + Half-Life 2 mashup

Melty lets you combine games in your library. This page is the search URL for a Portal 2 + Half-Life 2 mashup. The Portal Life idea on Portal 2's chambers plus City 17.

Co-op chambers and gels that Melty can join to other owned Valve or puzzle games. The other half of Portal Life: City 17 content joined to Portal.

Melty does not give you Portal 2 or Half-Life 2. If a copy is missing, the app opens that game's store. There is no charge for Melty or for the mashup itself.

## What Play does for this mashup

Press Play. Melty downloads Portal 2 + Half-Life 2, installs the files the mashup needs, and starts the host game. That is the whole setup path — no separate Vortex profile, no hand-copied folder.

When you uninstall the mashup, Melty puts every file back as it was. Report a mashup from its page if an upload looks wrong; every upload is checked for dangerous files.

## Friends and publishing

If the mashup is multiplayer, Play also gives you an invite link. Keep it private, send it to friends, or open a public lobby.

To make a variant, copy Melty's instructions into Claude Code or Codex and describe how you want Portal 2 and Half-Life 2 to meet. The coding agent builds the mashup and publishes it.

## FAQ

### What is Portal 2 + Half-Life 2?

Portal 2 + Half-Life 2 is a Melty mashup that joins Portal 2 and Half-Life 2 into one Play action. The Portal Life idea on Portal 2's chambers plus City 17.

### Do I need Portal 2 and Half-Life 2?

Yes. Mashups run on games you own. If either title is missing, Melty sends you to its store.

### Is Portal 2 + Half-Life 2 official DLC?

No. It is a mashup/mod launched from Melty, not a publisher DLC pack.

### 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.

### Is Melty safe?

Every upload is checked for dangerous files. If a mashup looks wrong, report it from its page.

## Related

- [Portal 2 on Melty](https://melty.casa/games/portal-2)
- [Half-Life 2 on Melty](https://melty.casa/games/half-life-2)
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## Download

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

Markdown mirror: https://melty.casa/mashups/portal-2-hl2.md