SCOTTSBLUFF, NE ‒ Johnny and Vicki Blevins stepped out of their pickup and gazed down at the thin ribbon of the old Oregon Trail below them. Over the course of several decades, beginning in the ...

Jazz Halfmoon, 38, remembers playing the educational video game Oregon Trail as a reward for doing well in class. "It was on a super-old computer," she says. "The green screen was like the only color.