When I think of "DARPA," and "video games," my mind leaps to Metal Gear Solid. The Defense Advanced Research Projects Agency (DARPA), run by the U.S. Department of Defense, has shown up for many years in our games as a shadowy source of implausible technology and machinations.
In recent years, however, DARPA has been turning the tables. Rather than simply appearing as a plot point in video games, they're using video games and crowdsourcing to create solutions and solve problems that cannot be taken care of entirely within the agency. Foldit, a protein matching game funded in part by DARPA, used the power of people at play to create a "human computer" that could outperform supercomputers when it came to the puzzle of assembling proteins. More recently, DARPA released a submarine-tracking game aimed at collecting and integrating crowdsourced data and tactics into real world submarine chases.