When a sequel gets so much hype and publicity the majority of newcomers to the series are casual fans who know nothing of the past games/movies in the series.
So when is Skyrim 2 coming out?
Skyrim is actually part five in the series excluding the additional games. Take it you never heard of Oblivion either. Classic example of the Skyrim Effect.
When game devs keep re-releasing the same game with the same graphics on newer consoles.
Man, The Skyrim Effect is in full force did you hear that GTA V is releasing on the PS5 now?