As the young but determined hero Mister Slime, players set off on an exhilarating adventure, trying to protect Slime Village from its evil enemies, the Axons. Using the touch screen and stylus, players must navigate the levels by dragging and stretching Mister Slime's arms to grab hold of small anchor points scattered throughout the game. Mister Slime features inventive uses of characteristics specific to Nintendo DS, including sound and shape recognition. As an example, players are able to blow on Mister Slime to make him fly in the air or to help him breathe under water.