Are you sure you downloaded the correct version? Should be .NET Core 3.1 x64 for desktop applications. There should be a direct link in the included installation instructions if you're not sure.
The link in the exe file is a bit vague (it's actually Windows that generates it, not the game). There's a more direct link in the installation instructions txt file. It leads here
It's now working.
For future ref I'll say that the autolink got me this file:
dotnet-runtime-3.1.26-win-x64.exe
While what the game needs to run is:
windowsdesktop-runtime-3.1.23-win-x64.exe
To whomever is reading this, note that the versions differ 3.1.26(wrong version) and 3.1.23(the needed one).
Cheers! :)