Catz on the Wii is a single-player action & adventure game, not a virtual pet game as one might expect.
The story behind Catz is as follows:
A young cat lives on a magic island with friends Arvin and Ione. Arvin wears a Magic Hat that keeps peace and order. However, an evil wolf named Ivlet steals the hat, causing chaos and destruction. The young cat must help his friends and find a way to stop Ivlet.
The gameplay involves completing quests, earning money, and shopping in stores. There are characters to interact with, but no voice acting, only cat-like noises. Enemies can attack or not, depending on their status, which is displayed above their head. As the player progresses, new skills are unlocked, such as fishing and catching insects.
Catz features sixty mini games that can be unlocked by playing them in Adventure mode. These games can be accessed from a separate game menu once they are completed.