Now that the Play deal has run out of stock for 360 and the Game price is back up to £23 plus it's out of stock too, next best deal on this game seems to be instore at Asda. Just back from my local and it's £20.00 on the shelf with plenty of stock. It's looks like a nationwide deal based on the experiences of several members below as well as myself. It's showing as £32.91 online though so it appears to be instore only. The game's sales pitch now:
The Chronicles of Riddick: Assault on Dark Athena brings the hit first-person shooter to a new generation of consoles. The action-packed game, a hi-definition re-imagined version of The Chronicles of Riddick: Escape from Butcher Bay, Assault on Dark Athena features an entirely new chapter in the Riddick Saga and for the first time, intense online multiplayer combat.
The Chronicles of Riddick series of games takes the player deeper into the universe of Universal Pictures' films The Chronicles of Riddick and cult classic Pitch Black, which first introduced Vin Diesel as enigmatic anti-hero Riddick. In Assault on Dark Athena the player takes the role of Riddick using stealth and action to overcome the merciless crew of the predatory Merc-ship Dark Athena which awaits its prey in the dark reaches of space. Cheating death through a series of spectacular battles and events, Riddick will fight for his life amid a storm of malevolence and horror.