Hamtaro: The Revenge of Spat (Japanese: とっとこハム太郎：デビハムくんの復讐でちゅ, Tottoko Hamutarō: Debihamu no Fukushū Dechu) is a game for the Wii, Wii U, and Nintendo 3DS. It is the sequel to Hamtaro: Ham-Ham Heartbreak.
After being defeated by Hamtaro and Bijou, Spat has been doing some plotting. He realizes that as long as Hamtaro and Bijou work together, they are unstoppable. So he decides to capture Bijou and lock her in the top of his newly built castle, Spat Manor, while he goes and wreaks havoc. Harmony appears and leaves it up to Hamtaro, Oxnard, and Boss to make their way to the castle to save Bijou, and fix the damage Spat has done along the way. You can switch your character between the three for specific challenges. As you go along the way, there are seeds and other pick-me ups, and the Ham-Ham stores return from previous games as well. You can also interact with other Ham-Hams for help. Harmony and Snoozer can give hints when needed, and Jingle will sometimes have walnuts that allow you to skip a difficult challenge (similar to skipping the minigames in Hamtaro: Rainbow Rescue).