"That's very comforting to people, because it puts distance between the visitors and who was involved, " Bachrach said.

NPR: Holocaust Survivors, Veterans Gather At DC Museum

Curator Susan Bachrach said the exhibit's research challenges the idea that the Holocaust was primarily about Hitler and Nazi leaders.

NPR: Holocaust Survivors, Veterans Gather At DC Museum

The free game was designed by programmer Mike Armstrong, and its creators, who include researchers Yoham Bachrach, 32, and Pushmeet Kohli, 29, hope they can eventually establish a Facebook Game Theory Lab.

FORBES: Microsoft Uses Facebook As Giant 'Lab' To Study Game Theory