Valve Hammer Editor 4.1 Download

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Valve Hammer Editor 4.1 Download

How to get and install Source™ SDK and L4D1/2 Authoring Tools?

As you might expect, this 2014 overhaul of Hammer has also introduced some brand new features previously not supported in the older, extremely outdated variants, including Texture Projection for UV Maps, Asset tabs, improved object properties, superior geometry manipulation, a built-in model maker, and an all-new Tile Editor which uses predefined areas to be quickly linked together to form.

Hammer 4.1 Valve Hammer Editor 4.x, provided as a component of the Source SDK, is the official Source mapping tool. Apart from the construction of level architecture, Valve Hammer Editor 4.x is also heavily involved with creating level events and scripting. Valve Hammer Editor is a tool developed in order to help you create game maps. Use the editor to create.rmf maps for Counter-Strike 1.6 and Half-Life 1(Gold). This is an upgrade to Valve Hammer Editor 3.4 (2.04 MB), application which you should have installed first before upgrading.

How to begin creating maps for any of Valve games?

I get this question asked a lot. In this tutorial you will learn everything you need to know how to get the Source SDK and L4D1/2 Authoring Tools.


SOURCE™ = game engine from Valve

SOURCE SDK = Source Software Development Kit. For Games such as HL2, HL2: EP1/2, Portal, CS:S, DoD:S, TF2.

L4D1/2 Authoring Tools = Source Software Development Kit for L4D1/2.

Hammer: Source = Level Editor for Source based games.

  • If you want to create maps and custom content for HL2, HL2: EP1/2, Portal, CS:S, DoD:S, TF2 you need Source SKD.
  • If you want to create maps and custom content for L4D1/2 you need L4D1/2 Authoring Tools.


1. Purchase the Game

Any of the following games purchased and installed: PC version only.

  • Half-Life 2
  • Half-Life 2: Episode Pack
  • Portal
  • Portal 2
  • Counter-Strike: Source
  • >Day of Defeat: Source
  • Team Fortress 2 (free to play and free to download)
  • Left 4 Dead
  • Left 4 Dead 2
  • The Orange Box (contains TF2, Portal, HL2: EP2)
  • >Half-Life 2: Game of the Year Edition (contains HL2, HL:Source, CS:S, HL2: Deathmatch)

You can purchase the above games from the walk-in stores, online stores, Amazon, Gamestops etc. You can also purchase any of these games from Steam.

2. Install Steam

You can download Steam from here. Steam is required for you to authenticate Valve games. You can purchase any games from the above list as well.

Steam will also be installed if you bought the games from anywhere other then Steam's website.

3. Launch Steam

Launch Steam and head over to Library --> Games. Here you will find a list of games that you own.

4. Download Source SDK or L4D1/2 Authoring Tools

Valve Hammer Editor Steam

Download Source SDK or/and L4D1/2 Authoring Tools by going to Library --> Tools in Steams interface.

  • If you want to create maps and custom content for HL2, HL2: EP1/2, Portal, CS:S, DoD:S, TF2 you need Source SKD.
  • If you want to create maps and custom content for L4D1/2 you need L4D1/2 Authoring Tools.

Install by Right Mouse Click on the SDK or Authoring tools and choose Install Game.

5. Open Source SDK or L4D1/2 Authoring Tools

After you have installed Source SKD or the L4D1/2 Authoring Tools open it up by double clicking on the SDK or Authoring Tools.

Choose the game you want to create custom maps for and Launch the Hammer World Editor.

Update: You no longer need to install L4D2 Addon Support.

Resources/List of Tutorials:

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Valve Hammer Editor
Original author(s)

Valve Corporation

Initial release


Operating system(s)

Windows 2000, XP, Vista, 7,10



Available in


Development status



Valve Hammer Editor, formerly known as Worldcraft and commonly named Hammer, is Valve Software's map creation program for their game engine, Source. Versions prior to 4 supported exclusively Goldsrc, Source's predecessor. It is freely available to anyone who has purchased a Source based game, as a part of the Source SDK.

The current version is 4.1.


The Hammer editor is used by level designers to create new maps for Source-based games. It is used to create geometry and to place objects (entities) in the game world. It can also be used to script events in maps, such as Combine Soldiers ambushing the player, via manipulation of entities.

The current version of Hammer, 4.1, supports both Source engine and GoldSrc games. However, placing an entity used in only one engine can cause errors. Those that create maps for GoldSrc usually use version 3.5, which is the last version that only supports GoldSrc games.

In order to create a map for a certain game, Hammer must have a special file, called a .fgd file, associated with it. This file tells Hammer what entities the game uses so that it will let the user select them. The .fgd files for official Valve games using the Source engine already come prepackaged into Hammer with the Source SDK, but for the GoldSrc games, the user must add them manually.

Download Valve Hammer Editor 4.1 Free

Hammer can also be used to compile maps so that they can be played in a game. To do this, Hammer runs the map through three (four in 3.5 and earlier) .exe programs; vbsp.exe, which renders the geometry, vvis.exe, which renders what geometry appears where, and vrad.exe, which renders the lighting. Versions 3.5 and earlier included an additional program, qcsg.exe, which renders the basic outline of the map for vbsp.exe to fill in. In 4.0, this has been merged with vbsp.exe.

Valve Hammer Editor 4.1 Downloadownload

Behind the scenes[edit]

  • Hammer originally started out as a paid Quake level editor named 'Worldcraft'. During the development of Half-Life (1997[1]), Valve hired Ben Morris, the creator of Worldcraft, and purchased the rights to own the program. They then developed it into the Valve Hammer Editor.[2]
  • When Hammer was still an independent product, the developer planned on allowing Hammer to edit Unreal maps.[2] This never came into fruition because Worldcraft was purchased by Valve before Unreal came out.
  • Hammer's first name was 'The Forge', but it was changed because the level editor for the Marathon game series is named 'Forge'.


  • Old versions of Hammer also supported Quake and Quake II. This is because of the similarities between the GoldSrc, Quake and Quake II engines.
  • With some manipulation, it is possible to make Quake maps in Hammer 3.3.
  • When first launched, the Hammer featured in the playable Half-Life 2 leak plays a 3 seconds MIDI intro of the song 'U Can't Touch This' by MC Hammer (named 'hamrtime.mid'), an obvious play on the name of the artist, and the infamous sentence featured in the song, 'Stop... Hammer time!'.
  • The icon used for obsolete entities consists of the head of Jay Stelly pasted on the bust of Fonzie from the TV sitcom Happy Days, with his trademarks thumb up and leather jacket.[3]

Valve Hammer Editor 4.1 Download


At least one image in this gallery is not captioned. You can help by describing the files below.

  • Worldcraft's first logo.

  • Ditto, with copyright text.

  • Second known Worldcraft logo, with a lambda in place of the A.

  • Worldcraft's 1.5 logo, which introduced the green hammer encased in a blue stone wall, also used as a new program icon, and still in use in Hammer.

  • Worldcraft's 3.3 logo.

  • Worldcraft's original program icon.

  • Hammer's program icon.

  • An official screenshot of a pre-release Half-Life map in Worldcraft 2.0.

  • The texture browser.

  • The 'Error' model', appearing in-game when a model is missing.

  • Variant used for Portal 2.


  1. Ben Morris on LinkedIn
  2. 2.02.1Hammer Editor version history at The Valve Developer Community
  3. The mystery of the obsolete guy is solved! - TF2Maps Forum

External links[edit]

  • The Valve Developer Community - official wiki dedicated to editing the Source engine
  • Zoner's Half-Life Tools - alternatives to the compiling tools included with the original Hammer
  • TWHL - a large, active mapping community with support for both GoldSource and Source engines
  • Worldcraft's original website (archive)

Valve Hammer Editor 4.1 Download Windows 10

Games, software, and related subjects
Half-Life game seriesHalf-Life(multiplayer) · Half-Life: Opposing Force(multiplayer · Capture The Flag) · Half-Life: Blue Shift · Half-Life: Decay

Half-Life 2 · Half-Life 2: Episode One · Half-Life 2: Episode Two · Future of the Half-Life series
Half-Life: Alyx

Portal game seriesPortal · Portal 2 · Peer Review · Perpetual Testing Initiative
DemosHalf-Life: Day One · Half-Life: Uplink · Portal: First Slice
PortsHalf-Life ports(Dreamcast · PlayStation 2 · Half-Life: Source · Half-Life Deathmatch: Source) · Portal: Still Alive
Technology demosDirected Design Experiments · Get Your Free TVs! · Half-Life Alpha · Half-Life demonstrations · Half-Life 2 demonstrations · Half-Life 2: Lost Coast · Polyrobo · Probe Droid · Source Particle Benchmark
VR technology demosThe Lab(Postcards · Slingshot · Longbow · Xortex 26XX · Secret Shop · Robot Repair · Solar System · Human Body Scan · Shooter) · Moondust · Aperture Hand Lab
Cancelled gamesBorealis · Half-Life: Hostile Takeover · Prospero · Return to Ravenholm · Shooter · Unannounced Half-Life project · Warren Spector's Half-Life 2 episode
Other official gamesBridge Constructor Portal · Deathmatch Classic · Half-Life 2: Deathmatch · Half-Life 2: Survivor(Battle Mode · Mission Mode · Story Mode) · Lego Dimensions · Portal Pinball · Portal 2 Sixense MotionPack DLC · Portal: The Uncooperative Cake Acquisition Game
CompilationsHalf-Life: Further Data · Half-Life: Generation · Half-Life: Initial Encounter · The Orange Box
ARGsHalf-Life 2 ARG · Portal ARG · PotatoFoolsDay ARG
Third-party gamesBlack Mesa(Achievements · Soundtrack) · Codename: Gordon · Garry's Mod · Lamarr Goes to the Zoo · Mods · Narbacular Drop · Portal: The Flash Version · Sven Co-op · Tag: The Power of Paint
LeaksHalf-Life 2 leak · WC map pack · 2016-2017 leak
Game enginesGoldSrc · Source · Source 2
Modding softwareHalf-Life SDK · Perpetual Testing Initiative · Source SDK · Valve Hammer Editor
AchievementsHalf-Life: Alyx · The Orange Box · Portal: Still Alive · Portal 2
MiscellaneousAlien Mode · Censored versions of Half-Life · Developer commentary · Development of Half-Life 2 · Easter eggs · High Definition Pack · Preliminary Findings · Multiplayer · Music · Pop culture references · Super 8 Interactive Teaser

Valve Hammer Editor Free Download

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