Here is another full hack from Ridley X for Mega Man 3. All the levels are changed and some graphics have been changed to look like from Mega Man 1!
Mega Man 3 (U) [!].nes - GOODNES 3.14
CRC32: 452D8089
MD5: 75B924155CAFEE335C9EA7A01BFC8EFB
SHA-1: 53197445E137E47A73FD4876B87E288ED0FED5C6
SHA-256: EDDBE571CF0A201BA9D090FBACE9843C9C9DD4053051649F2575B088752F4675