Spore for the PC / MAC in-store at WH Smith (loads left at Fosse Park tonight).
I appreciate this deal may not be nationwide, so it's probably worth checking with the store before travelling.
What is it? If you've been living under a rock, then you may not realise that Spore allows the player to develop a species from a microscopic organism to its evolution into a complex animal, its emergence as a social, intelligent being, to its mastery of the planet and then finally to its ascension into space, where it interacts with alien species across the galaxy. Throughout the game, the player's perspective and species change dramatically.
I was going to pick this up on Steam but it's still selling for £29.99 (gah!)
On-sale for a similar price at the Hut (£9.93), Zavvi (£9.95), and Amazon (£10.90). Play are still charging £26.99, so probably best to give them a miss this time too!