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Alien Swarm - SDK

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The Alien Swarm - SDK Alien Swarm - SDK, also known as Alien Swarm Authoring Tools, is a set of software utilities that allow you to create your own missions, weapons, aliens and other gameplay elements. They include versions of Source SDK tools that have been updated to work with the Alien Swarm version of the Source Engine. Unlike other branches and Authoring Tools starting from Left 4 Dead engine branch up to CS:GO engine branch, Alien Swarm Authoring Tools also ships with the game's source code for free.

Availability

The Alien Swarm - SDK are freely available on Steam to all owners of the PC version of Alien Swarm.

Downloading and installation

Installation of Alien Swarm - SDK on Steam.

To install or run the SDK/Authoring Tools, either click here or:

  1. Open the Steam window.
  2. Go to the Library.
  3. Click on the drop down filter box under the home button (usually displayed as Games or All by default).
  4. Check Tools, then search for Alien Swarm - SDK or find it manually by scrolling down the list.
  5. Double-click on the Alien Swarm - SDK entry, or click on Alien Swarm - SDK, then click Install.
  6. The Alien Swarm - SDK will download to your computer via Steam.
  7. Once it has been fully installed, you will be able to launch it in the same way you installed it (from the Library tab, with Tools enabled on the Library filter).

You can also create a desktop shortcut by right-clicking on the Alien Swarm Authoring Tools entry and clicking Create desktop shortcut from the context menu.

Note.pngNote:For the Authoring Tools to function correctly, it is important that your installation of Alien Swarm is fully up-to-date. You can make sure of this by running the game before launching the Alien Swarm SDK. Simply launching the game then quitting after you get to the main menu is sufficient. You can also verify both the game and the Authoring Tools by right click on the game and/or the tools ► Properties... ► Installed Files ► Verify integrity of games/tool files.

What's included?

The package includes:

  • Hammer, the Source level editor (4.1 Build 8678)
  • Suite of command line compiling utilities, such as studiomdl and map compiling tools
  • Updated Particle editor
  • Updated Faceposer
  • Example campaign
  • Tutorial maps
  • C++ source code to the Alien Swarm client and server dlls.

Where do I go from here?

Bugs and issues

See also