GAME uk wouldn't take back the collectors edition because it had been opened. They were going to offer an incredible £22 to trade it in though. £22!
GAME UK will take it back, you just can't take no for an answer from them. In legal terms they don't have a leg to stand on - the game is broken and therefore "not fit for purpose" (Statutory Right > Sales of Goods Act 1979 > Section 13 > Subsection 1 (Goods must be described accurately) and Section 14 > Subsection 2 and 3 (the game itself is broken therefore not fit for purpose and not of satisfactory quality).
They tried not to accept a return with me but after phoning their customer service in the shop quoting the sales of goods act and that I have no problem with taking them to county court to sue for damages they changed their tune and I received a full refund.