Okay, this is a little odd but there's some bargains to be had.
If you buy any XBOX 360 game you will have the choice of adding any discounted title(s) from these: Perfect Dark Zero - Xbox 360 Classic £7.99, The Club (PS3) £19.99, FIFA 08 (Xbox 360) £29.99 and/or Need for Speed - Prostreet (Xbox 360) £29.99.
If you buy any Playstation 3 game you will have the choice of adding any discounted title(s) from these: The Club (Xbox 360) £19.99, Burnout Paradise (PS3) £29.99 and/or FIFA 08 (PS3) £29.99
Why you can't buy any PS3 title or accessory and then have access to the PS3 version of The Club for £19.99 I have no idea. You can't even add the titles separately from the store to get the discounted price.
Don't forget that you can get 11% discount through Quidco so the savings really do stack up.