The fifth Call of Duty title hits UK retail stores today, what is apparently at least one bookies' favourite for Christmas No.1 takes Call of Duty fans back to World War II to fight Imperial Japan and Nazi Germany in the closing days of the war.

"Our goal from Day 1 has been to make sure that Call of Duty: World at War re-defines players’ expectations of World War II first-person action," said Treyarch studio head Mark Lamia. "From cooperative gameplay to a multiplayer that combines vehicle and squad combat, along with a host of new weapons, settings and enemies, we’ve left no stone unturned to make this the best experience possible."