Modern slot machines develop an unbreakable hold on many players—some of whom wind up losing their jobs, their families, and even, as in the case of Scott Stevens, their lives.

On the morning of Monday, August 13, 2012, Scott Stevens loaded a brown hunting bag into his Jeep Grand Cherokee, then went to the master bedroom, where he hugged Stacy, his wife of 23 years. “I love you,” he told her.