Thanks for giving it a try, sorry it didn’t work on Ubuntu! The destructible terrain was made possible by https://github.com/Zylann/godot_voxel/, which meant I had to compile custom export templates. I’ll have to do some more research on doing that portably. Thanks for the feedback, and being dedicated enough to try it under wine!
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Yeah, I think it was just compiled on a Linux with a newer version of glibc than is available on Ubuntu 20.04. I know for a time the official Godot Linux builds were done on a older Ubuntu (maybe 16.04?) to prevent this issue, but now I think they are done on a fairly recent version of Fedora, so there must be some other way around this problem. I do custom Godot builds for some of my games, and I use the same Docker containers as are used for the official builds, and it seems to work out.