This video shows how to make rubble and bring it into Unreal Engine. You will learn how to make rubble and the associated collision in Blender 4.1. You will then be shown haw to import the rubble and collision into Unreal Engine 5.4. The final render was done in Unreal Engine.
Material
In the UV editing workspace, I select all of the individual pieces
Using the U-key, I unwrap the pieces using the smart UV project
I open the shader editor and make a new material
I will be using a rock texture from AmbientCG – link is in the description
I select the principled shader and use CTRL + SHIFT + T to set up the texture maps
I increase the scale as needed
I add a color ramp between the roughness map and the principled shader
I move the white color stop to the left to reduce the shininess of the material
I select all the individual pieces and save them as an FBX file – making sure I activate “selected objects only”
I change the smoothing to “face”
Importing into UE5
I make a blank project
In the content drawer, I make a folder for the rubble
I import the rubble into the folder
I select all the rubble pieces and drag-and-drop them into the scene
I can now scale and rotate the rubble