Wario Land II is an action-packed adventure game where you play as Wario, seeking revenge on the special agents from the Black Sugar Gang of Kitchen Island who stole his treasure. The agents have left a mess in Wario's castle and surrounding area, and it's up to Wario to clean up the place and take back what he considers his own.
As Wario, you'll encounter various obstacles and enemies, some of which will give you temporary boosts or powers, such as turning into other Warios. For example, if hit by a bee, Wario can inflate like a giant ball of air to reach high platforms. However, be careful not to get hit by sharp objects, as this will return you to normal form and cost you the coins you've collected.