Number 3: Snow Brothers.
At number 3 comes the vastly well-received Snow Bros. Fifty levels of entertainment, with the option of simultaneous gameplay for both players, as well as a variety of power-ups, enemies, bosses, and hidden points zones. This game has Action, Adventure and loads of Fun- all loaded into one. It is very expensive these days if you want to but the original ROM, so I'd suggest you just follow the link below ;-)
Download link: "Snow Bros"