I hold no side-scroller in higher regard than the original Castlevania on the NES. It’s not the flashiest or more feature-stuffed game, but what it does, it does almost perfectly. The bosses could be better, I guess. However, perfection is a constantly shifting target, so I’ll take Castlevania as the closest we’ll ever get to it.
It’s probably why I prefer the classic formula of the Castlevania series over the later “Metroidvania” approach. Not...