Alliance are a serie of different mods. On the Star Wars GC, you can play the civil war Empire vs Rebel era + Black Sun and soon the Republic and CIS.
Lately I have been fixing again the original Underworld campaign for run without problems with the mod. It is a huge work because it needed a new and complete lua file, a lot of testing and even with all this, as always, lua missions are a non perfect piece of shit but it runs and it have fun. Unfortunately I needed four days working at it and I could not work at other mods but I will find time for them the next days.