This is a hack of Super Castlevania IV. It changes the HUD and font to be similar to the first Castlevania game. Simons sprite was also recolored to be a simpler color palette like the one in the first game. Weapon and item sprites were also ported and in some cases re-shaded. There is also a special edit to the final form of Dracula also.
This is a more in depth hack that changes more than what was changed in the Super CV IV - CV 1 & 3 Font and HUD hack. These exist separately as it’s unsure if there will be a CV3 updated version. Also because some people may only want the HUD changed.