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by dagw 1698 days ago
I'm guessing they used FME, it's certainly how I would do it. FME makes it surprisingly easy to turn arbitrary geographic data into Minecraft worlds. They also have an Unreal Engine writer[1] (although I've never used it) so in theory you should be able to output the same data to both Minecraft and UE with the push of a button.

[1] https://www.safe.com/webinars/your-data-in-unreal-how-to-bri...