Flushed Away is an action-packed 3D platformer based on Aardman Animation's first computer-animated movie with 3D graphics. You control Roddy, a rat from the posh side of Kensington, who gets flushed into the London sewers along with his friend Rita, who owns a boat named the Jammy Dodger. The evil Toad plans to destroy the rat community of Ratropolis and you must stop him.
The gameplay revolves around navigating through various settings from the movie in 10 levels, using different weapons to vanquish foes. Roddy uses a toothpick as a fencing weapon, while Rita can kick and use a bouncing bungee. The boat also has a crayon crossbow. You can collect power-ups such as Rita's Ruby, a fire extinguisher, and an air cannon, which help increase your health. Additionally, you can play minigames against a partner titled Rat Traps & Crayons, Castle Siege, and Pathfinder to unlock exclusive content.