Several features were used in Blood Moon that were prominent in the original Castlevania, but not utilized. For example; the water’s splash effect, having to break a path through the wall to proceed, bit-blade’s unique tile solidity glitch, and a few booby traps along the way which all make for substantially more interesting gameplay.
This is a very difficult game, for master vampire killers only. If you happened upon it by mistake, then run! far far away! Mwuahaha! Taken from retok.net
This is a great game made by Redrum along with all of his other great work here: http://www.romhacking.net/hacks/79/