Super Mario Land 2
At the Pipe screen, press Select to enable Easy Mode.
Hold B at the Map screen to bring up the whole map.
How to Beat Wario with One life:
Just go into wario's castle and when you die turn the game off right away, then flip it back on again. You will not have lost anything, money golden coins or even that hard earned life of yours.
Thanks to Revolution readers Kevin Porter, Nobody, Perfect Dark and Frankie D.!