This is highly optimized version of my 3d scanned rocks, adapted for use in any of the real time engines. Made specifically for use in VR, AR and games, but due to very high definition textures it can easily be used in high end renders as well.
The Unreal version is completely set up, with 3 LODs for each mesh, tight collision meshes, PBR materials and two demo scenes seen on the pictures. It also contains the ground material.
If you are going to use this package in Unity, I recommend downloading the FBX file and connecting the textures to materials. Unity 5 needs PBR textures, so you will need to invert the specular map to be used as roughness map.
The package contains 9 triangulated meshes and the polycount ranges from 3000 to 78 tris.
The textures included are:
Three 4096x4096 sets (normal, color, specualr/roughness) - one for each big rock
One 2048x2048 set (normal, color, specular/roughness) for all the small rocks and groups
Unreal package also contains one 4096x4096 set of textures for the ground.