Here’s a breakdown of information and generated content regarding gameplay for Castlevania: Symphony of the Night .
However, Konami has shown a preference for emulated collections. Unless they commission a ground-up remaster (which is unlikely given their current focus on PES and pachinko), the only way to see Alucard's cloak flourish across a full ultrawide monitor will remain the emulation hack. castlevania symphony of the night widescreen
If you are playing on a PC or Android via emulation, several specialized tools can force a widescreen perspective: Here’s a breakdown of information and generated content