This is a hack that simply changes "Castlevania"'s color palette to a more grimy one.
Levels are now dark and musty-looking, with most of their colors changed to create a gloomy and eerie atmosphere.
Gray isn't used as much as in the original, so that the backgrounds don't appear too dull.
The sprites' color palettes also have been changed, in order to stick out more.
Country: USA
CRC32: 5C7F34F6
MD5: 95ED9C387D46008DFF0800EC55AE285C
SHA-1: 1375BAAA21FEFB8A39259F70096199F94EF811CE
SHA-256: 0428A63F3CFAB0A5DE5E68FE96B0FD613FED90B1B928E637F3476425E5ADE640
Castlevania(USA).nes