Microsoft's push for Xbox Game Pass has been day-one exclusives. There are a variety of developers under the Xbox Game Studios umbrella; for instance Obsidian Entertainment, Double Fine, Mojang, and ZeniMax Media's Bethesda following its $7.5 billion acquisition announced last September. A draw for Game Pass is many of those studios' titles launch for essentially free to subscribers, yet a lot of heavy lifting is also done by titles like One Step From Eden that are added month-to-month.