This is a hack of the JP version of Megaman called Rockman.
Rockman RX has new level designs, background graphics and changes some enemy sprites.
Rockman (Japan) (En).nes - NOINTRO
CRC32: E0141A24
MD5: 8824842070A569E9BA7287BCDEA045A3
SHA-1: 5914D409EA027A96C2BB58F5136C5E7E9B2E8300
SHA-256: E5BBC798798A0F5AE6E6D22A35DF2FC3D08CEFE6A1B278ED7F1CC325E8EE19E0