It's in the original rules.
Dungeon Dice rules wrote:
At the end of combat, it is possible for multiple players to reach 4 Fame simultaneously. However, there is only one throne. If two players have equal claim on the throne, the two players must duel. Each player rolls his combat dice and may use ONE-USE dice normally. Player’s roll off to decide who may activate abilities first. The victor obtains the throne and wins the game.