Well, I just found out that there are two ares for Galaga and you haven't decided to merge with each other.

Galaga has a game loop it is at the end of the 8th challenging stage.
Will there be a category to support this for future runs?

You should probably PM one of them directly, I don't think they check the forums.

I can't install Galaga on my PC, it's stopped 98% , download Gameloop emulator https://gamehoy.com/en/