Mario´s first game on the Game Boy takes him to a strange world where he must rescue Daisy  the Princess of Sarasaland (she looks suspiciously like a certain other Princess) from the evil space monster Tatanga. This game is much like SMB1 and some of Bowser´s enemies has been borrowed to this game. Examples are: Goombas, Bullet Bills and the Koopa Troopas that now has a bomb tied to their back and blows up when Mario jumps on them.
Mario also gets the chance to control both an airplane and a submarine. As being the first Mario game on the GB it sold pretty good, 14 million copies worldwide!. Look at our review of the game.

Super Mario Land 1 -Story (From the manual)
Once upon a time, there was a peaceful world called Sarasaland. In this world there were 4 kingdoms named Birabuto, Muda, Easton, and Chai. One day, the skies of Sarasaland were suddenly covered by a huge black cloud. From a crack in this cloud, the unknown space monster Tatanga emerged to try to conquer Sarasaland. Tatanga hypnotized the people of all the kingdoms so that he could control them in any way he liked. In this way he took over Sarasaland. Now, he wants to marry Princess Daisy of Sarasaland and make her his queen. Mario came to know these events, and has started on a journey to the Chai Kingdom where Princess Daisy is held captive, in order to restore peace to Sarasaland.