Five substitutes with five interchanges instead of seven.
Two-minute half time instead of fifteen is allowed in the game.
In case of a draw after regulation, the match is continued into sudden death extra time in multiples of five-minute periods.
Conversions must be taken within thirty seconds of scoring a try, instead of sixty.
There are three player scrums instead of eight.
Yellow card denotes a suspension of two minutes instead of ten to the offender.
Referees decide on advantage quickly