Mashups and mods for games you own · Updated
Hollow Knight + Portal: Hollow Knight + Portal
Hollow Knight + Portal joins Hollow Knight and Portal. Hallownest movement inside Portal's puzzle rules, published as a Melty mashup.
Free for Windows.
Facts
- 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
- Hollow Knight + Portal
- Game A
- Hollow Knight
- Game B
- Portal
- On Melty landing
- Combination page — build/play via Melty
Hollow Knight + Portal facts (2026-10-12)
| Item | Value |
|---|---|
| Name | Hollow Knight + Portal |
| Joined games | Hollow Knight + Portal |
| 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 Hollow Knight + Portal mashup
Melty lets you combine games in your library. This page is the search URL for a Hollow Knight + Portal mashup. Hallownest movement inside Portal's puzzle rules, published as a Melty mashup.
Hallownest movement and bosses used as one half of a two-game mashup. Portal gun puzzles; featured in Portal Life with Half-Life 2.
Melty does not give you Hollow Knight or Portal. 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 Hollow Knight + Portal, 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 Hollow Knight and Portal to meet. The coding agent builds the mashup and publishes it.
FAQ
What is Hollow Knight + Portal?
Hollow Knight + Portal is a Melty mashup that joins Hollow Knight and Portal into one Play action. Hallownest movement inside Portal's puzzle rules, published as a Melty mashup.
Do I need Hollow Knight and Portal?
Yes. Mashups run on games you own. If either title is missing, Melty sends you to its store.
Is Hollow Knight + Portal 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 pages
Free for Windows.