In this video I show you how to create a game landscape using Unreal Engine's landscape tools to create your own world. I also show you how to create a landscape using height maps from https://terrain.party/.
Over the last several months terrain.party has stopped working. It may be that it is no longer supported. Here is a similar site that works almost the same way as I show in this video: https://cs.heightmap.skydark.pl/#
When I get a chance, I will update this video.