Hey @tim5322! I grabbed the Windows build from your linked page — heads up that judges may only rate the officially submitted entry, so it might be worth checking the jam rules on whether an external link counts.
That said, I tried it to give feedback: it has the exe and pck, but throws ".NET assemblies not found," looking for a data_Spin to win_windows_x86_64 folder next to the exe. C# Godot exports need that extra data folder (the .NET runtime files) alongside the exe and pck — looks like it didn't make it into the zip.
I couldn't play, so I won't rate, but hopefully this helps you get a working build up!
Happy to retest if you re-upload.