Mappy-Land follows the journey of Mappy the mouse as he attempts to win over his girlfriend, Mapica, by collecting gifts for her. However, his plans are threatened by the sinister boss cat Nyamco and his army of pink cats.
The gameplay in Mappy-Land revolves around navigating through stages while avoiding being caught by the cats. The player must collect specific items in each stage without getting eaten, with the collected items varying depending on the stage. Additionally, stage-specific items hidden in the background will aid the player in defeating their feline foes.