Possibly not the cheapest, but an easy pick up if you have a Sainsburys near you.
Call of Duty: World At War
The newest addition to the acclaimed Call of Duty series has been announced! Call of Duty: World At War will be heading to next gen consoles later this year!
The sequel to the title GAME customers voted both the Game of 2007 AND the Greatest Game Ever, Call of Duty: World At War will take Call of Duty 4: Modern Warfare's cutting-edge combat to new heights across an epic campaign set in the final missions of World War II.
From traversing the remains of Russia and the ruins of Berlin to tactical manoeuvres in the harsh wetlands of imperial Japan, Call of Duty: World At War presents unparalleled cinematic intensity on a worldwide scale. Play as a U.S. Marine or Russian Conscript across fronts from Europe to the Pacific, experiencing a new level of chaotic battlefield realism, playable for up to four players in online co-op!
With amazing new vehicles and weapons, unforeseen perils and a vastly improved multiplayer suite, Call of Duty: World At War will be THE must-have game for Christmas 2008.