Game are selling "NiGHTS: Journey of Dreams" for the Nintendo Wii for £12.99 (inc Del).
You can get cashback through the usual sites (e.g. 11% Quidco, making it just £11.56)
The next best price seems to be £15.93 from The Hut.
As a fantasy jester called NiGHTS, in NiGHTS: Journey of Dreams players will fly through Nightopia, a rich and vibrant world where dreams come to life. With the innovative Wii Remote, NiGHTS: Journey of Dreams players will experience a heightened sense of gliding, spiraling, and looping through seven mystical dream worlds packed with high-flying adventure. NiGHTS: Journey of Dreams players must find inventive ways to confront the Nightmarens from the neighboring dark world of Nightmare using amazing acrobatic skills, freedom of flight, and other special abilities to protect Nightopia.