Just been into my local currys (gentlemans walk, norwich city centre) and they have reduced loads of 360, ps3, wii games to between £10 - £20. Got mario soccer for £10, zack and wiki for £15 both for the wii. Saw some good 360 deals like lost planet for £10, devil may cry for £15, mass effect for £10.Orange box was only 15 on ps3 also.
Also had some cheap psp and ds games!! the games are in baskets near the games section and also on the shelf (be sure to have a good root through). The staff member said it was a local offer to this store and not nation wide.