Talking about Castlevania, imagine a Metroidvania where the main character would be nothing less than John Constantine (and his yellow-beige overcoat moving in the style of Alucard's cape), who would be asked to investigate an anomaly and 'possession' of an entire building like Empire State Building ...
In this building each floor would become a new and different dimension where the goal would be to advance to the superior (always leaving through the central elevator) facing various dangers and supernatural enemies until you reach the last where you would face the final boss possessed by some devil ...
But this was not really the last battle, after defeating this last boss would open access to an elevator that would take ...
(And just like in Castlevania SotN.)
... to the depths of the Earth, right in hell, where there would be another Empire State Building upside down nailed to the roof of this underworld, where again John Constatine should fight on each floor in a much more macabre version until he reaches the top (or should I say the bottom) to find his greatest enemy, precisely Satan himself ...
What did you think???

