I made a "spooky" graveyard scene in Unreal for Halloween. The trees were created in Speed Tree. Im getting more familiar with the ins and outs of that great program. I made a few tombstones in Maya and Zbrush to scatter around using a PCG graph. I ran out of time so I grabbed a megascans assets for the grass. I also made a wall that didn't make the cut.
I customized Unreal's nightsky and moon material to get the look I was after.