I had a blast making this in zbrush, the hexagon shapes just adds so much to the sci-fi vibe! The hexagon shapes were mading using Blender's honeycomb mesh then exported to zbrush. World creator will always be my favorite terrain generator.
The final version with paint-over and color grading are done with Adobe Photoshop.
The character and the sci-fi trees were made with Zbrush, and the hills were made using World Creator.