ImHex

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Hex editor and pattern language view Bookmarks, data processor and disassembler
Pattern definitions available
for 50 different file formats!

Paint forests or debris fields with customizable density. 🛠️ How to Install Download the .unitypackage file. Open your Unity Project . Go to Assets > Import Package > Custom Package . Select the Prefab World Builder 3.1.1 file. Click Import and wait for the toolbar to appear. 💡 Pro Tip: The "Eraser" Tool

Level Up Your Unity Workflow: Prefab World Builder 3.1.1 Prefab World Builder (PWB) is a game-changer for level designers. Version 3.1.1 streamlines the process of scattering, painting, and placing assets. Stop placing every rock by hand and start building immersive worlds in seconds. 🚀 Key Features in 3.1.1

Should I include a ?

Instantly vary scale and rotation for organic looks.

Drop items naturally using Unity’s physics engine.

Perfect alignment for modular environment kits.

Don't forget that PWB isn't just for adding; the modifier keys allow you to with the same brush settings. This makes iterative design incredibly fast—tweak your layout without ever leaving the Scene View. If you'd like to dive deeper, let me know: Are you writing for beginners or pro devs ? Do you need a list of alternative tools ?

Download File Prefab World Builder 3.1.1.unityp... Apr 2026

Paint forests or debris fields with customizable density. 🛠️ How to Install Download the .unitypackage file. Open your Unity Project . Go to Assets > Import Package > Custom Package . Select the Prefab World Builder 3.1.1 file. Click Import and wait for the toolbar to appear. 💡 Pro Tip: The "Eraser" Tool

Level Up Your Unity Workflow: Prefab World Builder 3.1.1 Prefab World Builder (PWB) is a game-changer for level designers. Version 3.1.1 streamlines the process of scattering, painting, and placing assets. Stop placing every rock by hand and start building immersive worlds in seconds. 🚀 Key Features in 3.1.1

Should I include a ?

Instantly vary scale and rotation for organic looks.

Drop items naturally using Unity’s physics engine.

Perfect alignment for modular environment kits.

Don't forget that PWB isn't just for adding; the modifier keys allow you to with the same brush settings. This makes iterative design incredibly fast—tweak your layout without ever leaving the Scene View. If you'd like to dive deeper, let me know: Are you writing for beginners or pro devs ? Do you need a list of alternative tools ?

ImHex is completely free and open source under the GPLv2 license.

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Windows
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MacOS
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Linux



There's also unstable nightly builds available on GitHub Actions. They will have more features but can potentially be less stable and have more bugs.

Download latest
Nightly
Do you have any questions? Need help learning ImHex and its Pattern Language? Just want to chat with some nice people?

Please don't be afraid to join our Discord Server and ask right away. There's usually somebody around to help :)