Source-checkedMaps & scenarios

Portal 2: The Underground 5/5

by The Mafia · for Left 4 Dead 2

The underground from Portal 2 ported into Left For Dead 2, and converted into a campaign, and two survival maps. All content is packed so you dont need Portal 2. Please get the other required Parts!…

71KDownloads
6 yr agoLast updated
Steam WorkshopSource

About Portal 2: The Underground 5/5

From Steam Workshop

The underground from Portal 2 ported into Left For Dead 2, and converted into a campaign, and two survival maps. All content is packed so you dont need Portal 2. Please get the other required Parts!…

The underground from Portal 2 ported into Left For Dead 2, and converted into a campaign, and two survival maps. All content is packed so you dont need Portal 2.

Please get the other required Parts!

FINALE HAS BEEN FIXED IN RECENT UPDATE!

Highlights

From source data

Footprint

Rated a light load on a server.

Last update

Its author last shipped an update 6 yr ago.

Portal 2: The Underground 5/5 on Nxeon

From our catalogue
One-click install
Supported on Nxeon Left 4 Dead 2 servers. We download it from Steam Workshop, place it, and restart the server.
Server load
light
Latest build
2020-05-30, released 2020-05-30

Game versions by loader

LoaderGame versionsNewest
Workshop

From 1 recorded build of Portal 2: The Underground 5/5.

Dependencies

Declared by the newest build that lists any. Required ones are installed with it on one-click installs.

What kind of mod it is

From the catalog
Listed on Steam Workshop as “Workshop”

Maps & scenarios

Custom maps, arenas and scenarios to play on.

Compatibility

Game
Left 4 Dead 2

Verified at the source

  • ✓Steam WorkshopOfficial listing, checked 2026-11-01Open ↗
  • ✓AuthorThe Mafia, as published on Steam Workshop
  • ✓LicenseNot published by the sourceFree

Portal 2: The Underground 5/5, answered

Generated from the mod’s own source data.

Is it free?

Yes. Portal 2: The Underground 5/5 is free to download from Steam Workshop.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Portal 2: The Underground 5/5 on a Left 4 Dead 2 server.

Free to download from Steam Workshop.