Surprising, some people gloss over the fact that the Metroid series has its roots in sci-fi horror. Yes, in spite of the series owing a lot of its influence to the Alien series, most people still see the series as more sci-fi adventure, which is fair (given that this is Nintendo, after all). Yet with Super Metroid, a landmark title that celebrates its 25th anniversary today, horror still has a very real presence with the game, despite its more action-oriented leanings.