Can video games be more than clever diversions? Sure, says Persuasive Games, a site founded by Georgia Tech professor and game theorist Ian Bogost. It offers free-to-play “advergames” — games specifically built for “persuasion, instruction and activism.” If you’ve ever wondered about how the flu virus spreads (Killer Flu) or obesity’s relationship to socioeconomics (Fatworld) or how to feasibly build clean-energy wind farms (Windfall), this is where to find that information.