Similar effect with the Fallout series. A whole lot of the fanbase has never played any of the three 2D games (Fallout, Fallout 2, Fallout Tactics). The series started, for them, with Fallout 3.
I’m kinda that way with Elder Scrolls. My first one was III (Morrowind) and I’ve still never played the first two.
Daggerfall is a must!!! You'll get to see how it shaped Bethesda and the Elder Scrolls games that came after (including Morrowind)
Yeah, for me, Fallout 1 and 2 are the definitive Fallout games (ignoring Tactics as I never played it). I felt like 3 and onward were like Elder Scrolls total conversions, and I always saw them as "spiritual successors" but not exactly cut from the same cloth, or something. Like, same universe, but very different style and feel, and far less memorable or influential to me. Of course I played the first two games at a far more impressionable age, but the actual atmosphere of the games was a lot more gritty and impactful, even comparing the "eras" today.