 Mischief Makers is the first single @-@ player 2D side @-@ scrolling platform game on the Nintendo 64 console . Its gameplay combines platform game mechanics with aspects from the action and puzzle genres . The characters and backgrounds are modeled in pre @-@ rendered 3D similar to Donkey Kong Country 's " Advanced Computer Modeling " . This style , with 3D backgrounds behind 2D gameplay , is known as " 2 1 ⁄ 2D " . Compared to previous Treasure run and gun games , Mischief Makers 's gameplay is more exploratory in nature . 
