I don't see why they wouldn't apply, especially when they threw Manga in.I'm sure they weren't counting games, especially individual games like Survive.
Cyber Sleuth has 20 chapters/episodes, Hm has 18, rearise had around 40, survive will have 13. they work the same way as episodes just much longer.They said "series." Like a series of episodes or chapters. World and Story are not series in the same sense, since every game has its own plot. They aren't actually sequential.