Pixelator Add-On
How do I export the result to a game engine (Unity/Unreal)?
To export, you must "Apply" the modifier. Just check the Convert Instances option and go to the modifier properties and select Apply. This will convert the procedural instances into a static mesh that can be exported as an .fbx or .obj.
Can I use textures from my original model?
Absolutely. Pixelator Pro is designed to sample UV data from your source meshes. As long as your original model is textured, the pixels will inherit those colors. Make sure to specify your UV Map name in the "Data & UVs" panel.
The settings disappeared from the sidebar!
The settings only show up when the Pixelator_Output mesh is the active selection. If you click on another object, the panel will revert to the "Initialize" button.