Super League's eras including Leeds' golden years and Woolfball to celebrate 30 years

The theory of evolution, in its most basic form, comes down to the principle of "adapt or die". In rugby league terms, there have been distinct eras in which, usually, one side has adapted more quickly than the rest.

Six chances, six play the balls, six moments to get your team on top - but how these moments have influenced games has changed as styles of play have modified over time.