"I've actually got big concerns about the game at the moment, because there are not enough tries being scored, which is turning the fans away," said Hansen, a former Wales coach who has set the standards with the All Blacks.
"I think there's a responsibility on the coaches and the players as well. We are trying to get defensive lines up really quickly, but I think we've probably gone too far with it.
"There's a responsibility to the game. If we don't do that, then we are not going to have any running rugby.
"There were only three tries scored in the two games I went to over the weekend. No-one is prepared to take the risk, because they are going to get belted behind the advantage line if they move the ball.
"If we want to encourage people to watch the game, then scoring tries is what does that.
"We can get blinded by a loyalty to our team or we can say to ourselves, 'Is this really the game we want?'
"If we don't address it, then we are going to get very boring rugby matches.
"We are about to go into a showpiece for the sport at the World Cup. There are going to be millions and millions of people watching it and then all you're going to see is people kick goals."