Phineas and Ferb (Nintendo DS) £10 delivered @ Amazon
Next best i can see in stock - £17.99
Join Phineas Flynn and stepbrother Ferb Fletcher as they set out to conquer boredom during their summer vacation. This Nintendo DS game is a fun-filled adventure for players, as they help Phineas and Ferb build an outrageous roller coaster, create a snow course in the middle of summer, and race cool monster trucks through obstacles. Players collect gadgets and objects that provide special abilities and powers, as well as compete in mini-games and solve puzzles to complete their missions.
As with the Disney Channel series, the brothers bold escapades always end up frustrating Candace, their teenage tattletale sister. Try as she might to show Mom what Phineas and Ferb get away with, she never quite succeeds. Meanwhile, the family's simple-minded pet platypus leads a double life as secret "Agent P, battling the evil Dr. Doofenshmirtz to save the world.