Succession games are a popular part of Dwarf Fortress gameplay, in which rulers take turns playing the game, usually for the period of one year each.
A particular type of succession game is the Bloodline game, in which players do not alternate turns, but instead rule for one year each and pass it on to the next willing ruler. A notable example and by far the most famous is Boatmurdered.
In a second type of bloodline game, players take turns based on real-time. An example is the popular "Sparkgear" franchise, which limits players to 24 hours each.