I will probably need a while for this. I think my largest problem is that I'm always like 5 years behind on actually playing games. So when I actually get to the latest game, a new one has already released.
Baldur's Gate 3 is better than the Baldur's gate games before, but I have not played it enough for my opinion to have grounds.
If one consider the RTS games in the Warcraft universe its own series, then Warcarft 3 being the latest game is the best.
I try thinking of other dead or dormant series. But even there I usually like an earlier entry. Advance wars Dual strike is my favorite, the first Hotel Dusk is better than Rear Window. If one ignore the special 99 version F- Zero GX is the best in the series.







