The "v1.50 all-in-one" designation typically refers to a community-assembled version that includes the base game plus several critical updates and expansions: Artificial Girl 3 - Hgames Wiki
So, you want to dive into the world of Japanese animation and comics. Whether you are a complete beginner looking for your first binge-watch or a seasoned otaku hunting for a hidden gem (that is still technically "popular"), you have landed in the right place. The "v1