ONE MINOR GLITCH WITH THE GAME , DO NOT COLLECT THE BLUE COIN IT WILL RESTART THE GAME.
AVOID THOSE AT ALL. ALSO THE OVERWORLD WILL NOT DISPLAY PROPERLY  FROM WHAT I READ IN THE READ ME FILE OF THE PATCH.

Works perfectly on original NES consoles.
This game is guarantee to work on original systems only, should ALSO work on 90% of clone consoles as long as they are hardware type console, if you use emulation based system like a RETRO FREAK, RETRON 5 or POLYMEGA, there’s always a chance it may not work on those system.