It's a niche game so it's understandable. I created a ticket 37 days ago but I imagine it's either lost in the system or that there is a huge backlog.
In case it's in limbo and not just delayed, here is the title:
#31498 Ultimate General Gettysburg shows as unknown game in multiplayer
There are some screenshots of how Gettysburg structures its exes etc, but here is probably the most relevant information:
Here is the .meta information from the multiplayer client:
and the .meta information from the single player client:
title=Ultimate General: Gettysburg