'World at War' a fine addition to 'Call of Duty' franchise

Let's cut video game developer Treyarch a little slack.

Since 2005, the studio and fellow developer Infinity Ward have taken turns creating titles for the first-person shooter franchise Call of Duty. Yet Infinity Ward seems to earn all the high praise, recently astounding gamers with 2007's Call of Duty 4: Modern Warfare.

But Treyarch is slowly emerging from Infinity Ward's shadow with the debut of Call of Duty: World at War, a powerful shooter that capitalizes on Modern Warfare's strengths with explosive results.