I am happy to join Longhouse project in the third week. I was responsible for the fire pits. It was an amazing work. I used maya, zbrush, substance painter, and houdini to make this asset. Before making them, I searched lots of resources about ancient fire pits on the web, and then I drew a rough shape of it. Finally, I put this asset into UE4 for the preview.
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longhouse5.ca 