Based on Scholastic's popular books and television series, Animorphs is a 2D action / RPG hybrid. The evil Yeerks are invading Earth and only the Animorphs can stop them with their morphing power. Play as all five members of the Animorphs and collect DNA from animals you meet - now you have the power to morph into these animals. Keep your morphing power a secret from the regular humans, and use the correct morph at the right time to escape from tricky situations. Every animal has certain advantages and drawbacks against certain enemies. Play through five RPG levels with turn-based combat and five 2D minigames in order to defeat the Yeerks and save the planet.
Ubisoft feared that the "Gun" in the developer's name, Run and Gun!, would offend parents. The developer was asked to come up with a less offensive label for this game. As such, they are credited in the developer logo screen as "RunnyFun!" with the tagline "It’s good ... for kids!!!".