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Lambda Content Authoring Tools
v1.6.1 Released 8th October, 2026 Windows, macOS & Linux
Content Authoring Tools

Everything you need to author weapon finishes, stickers, graffiti, music kits, maps and vScript, packaged into a single application with a one click publish to the Workshop.

Download for
Other platforms
All Downloads
Every build of 1.6.1 is 64 bit only. Pick the one that matches your machine.
Windows
x64
Your system
Format
Installer (.exe)
Size
1.5 GB
Download 1.5 GB
SHA-256
macOS
x64
Your system
Format
Disk Image (.dmg)
Size
Unavailable
Linux
x64
Your system
Format
AppImage
Size
1.4 GB
Download 1.4 GB
SHA-256
What's New in 1.6.1
The latest changes shipped to Content Authoring Tools.

- Fixed the window not opening on Windows.

What's Included
One install gives you every tool in the Lambda content pipeline.
Lambda Citadel
Brings your project together and publishes it to the Lambda Workshop.
Hammer++
A bundled copy of Hammer++ for building maps for Lambda gamemodes.
Workbench
Create and preview weapon finishes before you publish them.
Composer
Create and test music kits with in-game audio previews.
Printworks
Test sticker artwork against the Lambda decal compositing system.
Vandal
Author and test graffiti sprays under Source lighting.
vScript IDE
A code editor for Lambda vScript files for maps and custom games.
Assembly
Pack custom content directly into your Source Engine BSP files.
Place Forge
Set place names on your map through the navigation mesh.
Getting Started
New to authoring content for Lambda? Start here.
Installation Guide Publishing to the Workshop Content Creation Docs