Guide · Half-Life 2 · Game

Half-Life 2 mods: where to find and install them

Half-Life 2 mods come from three places: the in-game Workshop, free mods on Steam and the sourcemods folder. Here is how each one works.

· tamaHalf-Life 2

Half-Life 2 was one of the first games we covered. In January 2013 our Editors Choice went to Suicide Survival, a Half-Life 2: Deathmatch mod, and the reviewer admitted: “I’m completely addicted to this Half Life 2 Deathmatch mod.” More than a decade later, people still make mods for Valve’s 2004 shooter, and getting them is easier than it was then.

You can get Half-Life 2 mods in three ways: the Steam Workshop inside the game, free mods with their own Steam store page, and mods you download elsewhere and copy into the sourcemods folder. This guide covers all three, with a list of well-known mods on Steam.

Nobody here has played these mods for this guide. Every fact comes from Valve’s update notes, the Steam store pages and Valve’s developer documentation, checked on October 16, 2026.

What changed in November 2024

Valve’s 20th Anniversary Update on November 15, 2024 changed how the game handles mods. The parts that matter for modding:

  • Steam Workshop is built in. In Valve’s words: “Browse, install, and play user-created content for Half-Life 2 without ever leaving the game. Look for it in the Extras menu!” The Workshop holds whole campaigns and smaller changes to weapons, enemies and the interface.
  • The episodes are in the box. Half-Life 2 now includes Episode One and Episode Two, and Lost Coast sits in the Extras menu. The old standalone versions stay available for “community projects that rely on them”, but they now appear under Tools in your Steam library.
  • Gamepad interface. Big Picture mode now uses the gamepad interface from Steam Deck, and the -gamepadui launch option turns it on anywhere. Our Steam Deck mods guide covers modding on the Deck.
  • The old build is kept. The pre-update game is in a public beta branch named steam_legacy. Valve says that if a mod behaves in an unexpected way, “you may need to run this archived build until the issue is resolved”.

Later fixes in November 2024 handled Workshop mods that loaded as the wrong episode, corrupt add-ons and weapon reskins for the stunstick.

How to install Half-Life 2 mods

From the Steam Workshop

This is the easiest way and the one Valve now builds for.

  1. Install or update Half-Life 2 on Steam.
  2. Start the game and open the Extras menu.
  3. Browse the Workshop there and install the content you want.
  4. If a mod breaks after a game update, open the game’s properties in Steam, choose the steam_legacy beta and try again.

Mods with their own Steam page

Many larger mods are on the Steam store as free products. You install them like a game, and they show up in your library. Valve’s rules for Source engine mods say they “must be configured to require ownership of the base game”, so you need the game the mod is built on. For an Episode Two mod, that can mean the episodes too. Entropy : Zero, for example, says “You must own Half-Life 2 + Episode 1 & Episode 2” and also needs Source SDK 2013. Read the requirements on each store page.

Mods from outside Steam

Older and smaller mods often come as a download from the author’s site or a mod host. These go in the sourcemods folder inside your Steam steamapps folder. Valve’s developer wiki explains: “Usually, a Source mod that isn’t available on Steam can be manually placed here. Steam will recognize a non-Steam mod if it is in this folder and the mod is configured properly.”

  1. Download the mod and extract it. You should get one folder with a gameinfo.txt file inside.
  2. Copy that folder into steamapps/sourcemods.
  3. Install the base the mod’s readme names, for example Source SDK Base 2013 Singleplayer, from your Steam library.
  4. Restart Steam. The mod appears in your library.

Only download from the mod author’s own page or a host the author links to.

Half-Life 2 mods on Steam

These mods have their own pages on the Steam store. The release date is the Steam release, which can be later than the mod’s first version.

Free Half-Life 2 mods on the Steam store, checked October 16, 2026
Mod By On Steam What it is
Half-Life 2: Update Filip Victor, Valve March 27, 2015 Better lighting, bug fixes and a community commentary mode for the main game
MINERVA Adam Foster April 28, 2013 The 2013 edition of a well-known Episode One mod, set on a Combine-held island
Entropy : Zero Breadman October 9, 2017 An Episode Two mod: you play a stranded Metrocop in City 10
Entropy : Zero 2 Breadmen August 20, 2022 The sequel: lead Combine soldiers and synths to capture Dr. Judith Mossman
Half-Life 2: DownFall marnamai April 17, 2017 A single-player mission as Gordon Freeman around White Forest
Half-Life 2: Year Long Alarm Chuck Wilson November 16, 2018 An Episode Two mod set in a mine outside City 17
Synergy Synergy Team October 3, 2008 Co-op: play the Half-Life 2 series and other single-player mods with friends
Half-Life 2 RTX Orbifold Studios March 18, 2025 Free DLC remade with RTX Remix; the store offers a Ravenholm and Nova Prospekt demo

Half-Life 2 RTX has much higher requirements than the rest. Its minimum is an NVIDIA GeForce RTX 3060 Ti with DLSS on, 16 GB of RAM and 50 GB of free space. The other mods list modest minimums, such as a 1.7 GHz processor and 512 MB of RAM.

Where to start

  • You want the main game to look and run better: Half-Life 2: Update.
  • You want a new story in the same world: MINERVA, then the Entropy : Zero games for the Combine side.
  • You want to play with friends: Synergy.
  • You want small changes, such as a new weapon model: the Workshop in the Extras menu.

Sources

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