http://bugs.winehq.org/show_bug.cgi?id=15883
--- Comment #13 from Vincent Povirk madewokherd@gmail.com --- The demo of http://capbros.itch.io/instant-dungeon is also affected when run under wine-mono. I didn't test native dotnet. It seems mono sometimes internally translates these paths to be rooted at c:, and sometimes it does not. Removing the z: drive mapping works around it in this case.