LOS ANGELES (November 9, 2007 03:20 AM EST) "Call of Duty," the dominant game in the first-person shooter's dominant time period - World War II - has left its roots behind.

Infinity Ward shifted the fourth entry in the franchise into current times. Think Middle East, terrorism, high-tech.

How'd they do it?

The game studio's founder Grant Collier explains, and shows you around his offices, in this week's edition of "Up Down Left Right." "Call of Duty 4: Modern Warfare" (rated M, $59.99 for Xbox 360 and PlayStation 3, $49.99 for PC) is out Nov. 5.

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Watch the video here: http://asap.ap.org/data/interactives/_moneyandgadgets/udlr/udlr31/

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"Up Down Left Right" is a weekly video feature starring asap reporters and gaming gurus DERRIK J. LANG in New York and RYAN PEARSON in Los Angeles. From separate coasts, they provide their take on today's - and sometimes yesterday's - games. E-mail them at updownleftright@ap.org.