Here is a hack for Rygar which changes all the maps in the game! The difficulty is also another factor which has been increased as well.
Rygar (U) (PRG0) [!].nes
CRC32: 8071EC1E
MD5: 6B9E389C9C455C7D5A867311B051BEEE
SHA-1: 8D0DB0EE8CA975FFAE848B161A041440CF20DAF1