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Left 4 Dead 2 Authoring Tools
The Left 4 Dead 2 Authoring Tools, also known as an SDK, is a set of software utilities that allow you to create your own levels, campaigns, common Infected, and other gameplay elements. They include versions of Source SDK tools that have been updated to work with the Left 4 Dead 2 version of the Source Engine.
The Left 4 Dead 2 Authoring Tools are freely available on Steam to all owners of the PC version of Left 4 Dead 2.
Download and install
To install the Left 4 Dead 2 Authoring Tools, either click here or:
- Open the Steam window.
- Go to the Library.
- Click on the drop down filter box under the home button (usually displayed as Games or All by default).
- Check Tools, then search for Left 4 Dead 2 Authoring Tools or find it manually by scrolling down the list.
- Double-click on the Left 4 Dead 2 Authoring Tools entry, or click on Left 4 Dead 2 Authoring Tools, then click Install.
- The Left 4 Dead 2 Authoring Tools will download to your computer via Steam.
- 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 Left 4 Dead 2 Authoring Tools entry and clicking Create desktop shortcut from the context menu.
![Note.png](/w/images/thumb/c/cc/Note.png/10px-Note.png)
![Note.png](/w/images/thumb/c/cc/Note.png/10px-Note.png)
![Icon-Bug.png](/w/images/thumb/b/b4/Icon-Bug.png/10px-Icon-Bug.png)
Fatal Error - Out of thread ids. Decrease the number of threads or increase MAX_THREADS_SUPPORTED
- Fatal Error Out of thread ids
System Requirements
Won't work under Linux without extra steps...
Todo:
- Set Left 4 Dead 2 Authoring Tools run under Proton.
- To avoid rendering bugs, add a launch option: PROTON_USE_WINED3D=1 %command%
- You may need to enable Proton for Left 4 Dead 2. (Sometimes)
See also
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