This is a realistic reproduction of a Mars Open World.

The size measures 4 by 4 Km with world partition and streaming level enabled.

It's fully editable with Unreal tools (including landscape and foliage).

The Rock texture uses XYZ projection, allowing you to use your own meshes with the advantage of an 8K texture.

Demo : https://youtu.be/BA2LqdSZvkQ

!! Please note that the Mars surface is relatively empty, making lighting and color grading crucial factors !!