As Dr. Muto, players forge through 22 vast levels on four distinct planetscapes: the junkyard world of Totltec, the half-drowned water world of Aquem, the smog-choked skies of Flotos, and finally, the forbidden mines of Mazon. Armed with his newest invention, the Splizz gun, Dr. Muto morphs himself into a variety of DNA-spliced creatures including an alien spider, a miniature mouse, and a hulking gorilla. By morphing, Dr. Muto gains each creature’s abilities and physical attributes--such as the ability to cling to webs, squeeze into tight spaces, and breathe underwater--all to better crush, outwit, and outlast 10 different enemies.