The 2030 World Cup will be hosted across the Pacific and the United States, with Australia's Rugby League Commission responsible for organising and running the tournament.
Announced in Sydney on Monday, the format will spread group-stage matches across as many as five venues, potentially including Sydney, Brisbane, Auckland, Hawaii and Utah.
Men's and women's pool games will be played in a Magic Round-style schedule, with a full slate held over three days at one stadium before the event moves to another venue.
International Rugby League chairman Troy Grant also defended new eligibility rules allowing players to represent a country where one of their great-grandparents was born.
Grant said the rules would not weaken the credibility of international competition, but would enhance it.