Galaga Demo (set 2) [Homebrew] is a homebrew version of a Galaga game, meaning it wasn't officially produced or distributed by Namco. Homebrew games are often created by independent developers and may incorporate elements from the original games, along with unique features or modifications. The specific gameplay might vary from the original Galaga title, reflecting the creator's vision and modifications.  Information on the specific developer or distributor will be unique to the homebrew community.

Galaga Demo (set 2)

Galaga 3 (GP3)