Now it has 30 teams, with another on the way next season in the Vegas Golden Knights. Players wear high-tech fabrics, swing composite sticks with curves and play games outdoors in football and baseball stadiums before thousands of people.
"There is nothing that can replace history, and the history of our game is as good as, or better than, any other sport in the world," said Wayne Gretzky, the NHL's all-time leading scorer and Centennial Ambassador. "That's what makes it so special."
After answering questions from fans at The PreGame fan festival Sunday, Gretzky ducked into the Centennial Fan Arena, a mini, mobile Hockey Hall of Fame on two truck trailers that will tour NHL cities this year. He surprised fans who were looking at the exhibits.
"I was about to walk out," said Robert Ketis, 36, of Guelph, Ontario. "And then I was like, 'Wait, no, I'm not.' "
Gretzky approached a glass case displaying sticks.
"Is there a Gretzky stick in there?" Ketis asked.
"Yes," Gretzky said.