Naruto: Ultimate Ninja 2 - £15.99 +4% QUIDCO
Funnily enough this is the sequel to Naruto: Ultimate Ninja. Just been released in PAL format and can be found at Shopto.net for £15.99. Considering the first game hasn't dropped much below £15.99 - at any point - this is a pretty good bargain when you factor in Quidco as well.
"Great ninja aren't born, they're raised!"