Nidhogg is a fast-paced sword fighting game that pits two players in an intense, steel-on-steel battle of tug-of-war that harkens back to the old days of arcade battles. Messhof hide caption

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Desktop Dungeons is an easy-to-pick-up puzzle, strategy, single-player role-playing game. It can be difficult, but the ease of repeat play and deep strategic elements will keep you coming back. QCF Design hide caption

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A screenshot of Half the Sky, where virtual successes sometimes lead to real-life donations. Games For Change hide caption

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Kelly Kelley, who goes by the gaming pseudonym MrsViolence, streams her play nightly for her many fans to watch. Twitch.TV screenshot hide caption

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A screenshot of the iPad game If, which aims to teach kids how to navigate interpersonal challenges and failures. NPR hide caption

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Independent developer Jonathan Blow's time-warping, mind-bending puzzler Braid turned a hackneyed plot — little guy rescues a princess — into a melancholy meditation on love and loss. Microsoft/AP hide caption

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Recently released sports video games are touting how their high-powered graphics portray players like the Oklahoma City Thunder's Kevin Durant realistically. The realism extends to audio as well. 2K Games hide caption

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The Sony PlayStation 4 sells for $399. Pablo Blazquez Dominguez/Getty Images hide caption

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What's that worried look, Elizabeth? Could it be that there's more to BioShock Inifinite than meets the eye? Irrational Games hide caption

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Strenuous mental exercise like reading difficult books, solving tricky math problems — or, maybe, playing the right video game — can help keep a healthy brain sharp, research suggests. Images.com/Corbis hide caption

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The American Academy of Pediatrics recommends that children have no more than two hours a day of "screen time." Marilyn Nieves/iStockphoto.com hide caption

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BioShock Infinite revolves around an Aristotelian tragedy with tragic heroes, grounded in a floating city set in 1912. Courtesy of Irrational Games/2K Games hide caption

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Gears of War: Judgment hit stores on Tuesday. Courtesy Microsoft Studios hide caption

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Electronic Arts CEO John Riccitiello, seen here speaking at the E3 Expo in 2010, is stepping down, the company announced Monday. Michal Czerwonka/Getty Images hide caption

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