Very simple concept: ground tile exiting from left of the screen will be repositioned on the right. Every tile have also some rocks that will be scaled and rotated randomly.
To make things more interesting I added to the game project a Manuel Bastioni Lab character, a ground texture, a rock mesh and finally a 360° background image.
360° image is a panoramic Blender rendering of the same texture and rock mesh used in Godot over a landscape made with A.N.T. addon.