Anvil CSG press kit

A brush-based level editor that runs inside the Unity Editor.

Developer: Simon (2Yeet (https://2yeet.com)), a solo developer from Croatia
What it is: Level editor that runs inside the Unity Editor
Unity: Beta 2: Unity 6.3. Paid version: Unity 6.0 to 6.7 (planned)
Render pipelines: Built-in and URP (no HDRP)
Current version: Beta 2, free preview (updated 25 September 2026)
First public version: Beta 2, 14 September 2026
Price: Beta 2 is free. Paid version on the Unity Asset Store: $20, $14 for the first two weeks. No launch date yet.
Download: GitHub releases (https://github.com/TheGreatSimon/AnvilCSG/releases)
Docs: 2yeet.gitbook.io/anvilcsg (https://2yeet.gitbook.io/anvilcsg)
Contact: simon@2yeet.com (mailto:simon@2yeet.com)

Short description

Anvil CSG is a brush-based level editor for Unity, in the style of Hammer and TrenchBroom. You build levels out of brushes right in the Unity Editor, and Build Map turns them into normal meshes. Beta 2 is a free preview for Unity 6.3.

Long description

Anvil CSG is a level editor for Unity that works with brushes, the way Hammer and TrenchBroom do. You lay out rooms in the top, front and side views, cut doors and windows with carve, paint materials on the faces, and Build Map turns the whole thing into normal Unity meshes. The brushes stay in your project, so you can go back and change the layout whenever you want.

It's made by Simon, a solo developer from Croatia who puts out his tools under the name 2Yeet. Beta 2 is a free preview for Unity 6.3 (Built-in and URP). The full version is on its way to the Unity Asset Store.

Video: https://www.youtube.com/watch?v=B0sDldIkYYs

More: https://2yeet.com/projects/anvilcsg/press/
Contact: simon@2yeet.com
