BBC News – Video games “can improve vision”

Researchers found playing the games improved the ability to notice even very small changes in shades of grey against a uniform background.

U.S. Navy – Video Games Improve Brains, “Fluid Intelligence”

We have discovered that video game players perform 10 to 20 percent higher in terms of perceptual and cognitive ability than normal people that are non-game players.

MSNBC – “Grand Theft Auto” may improve decision-making skills

Now scientists find action gamers apparently are better at making quick and accurate decisions, ones based on details they extract from their surroundings.

East Carolina University – ECU study shows casual video games relieve stress

These exciting results confirm anecdotal evidence that people are playing casual video games to improve their mood and decrease their stress, and herald casual games’ potential in health promotion, disease prevention, and treatment of stress- and mood-related disorders.

The Boston Globe – How video games are good for the brain

Fast-paced, action-packed video games have been shown, in separate studies, to boost visual acuity, spatial perception, and the ability to pick out objects in a scene. Complex, strategy-based games can improve other cognitive skills, including working memory and reasoning.