Game designers spend years developing games to get players to this place. It’s what makes the difference between a hit game that fans play for hours on end and something they’re done with after 20 minutes. Melcer and his colleagues may have a new way to understand players’ needs–even better than the players understand themselves.

“There are a lot of things that go into a gaming experience that can be difficult to communicate, and some people don’t have the verbal skills to be able to do so,” Melcer says. “Sometimes communicating with visual objects makes that a lot easier.”

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