Games end when certain conditions are fulfilled: a player reaches a certain goal, time runs out or all players but one are eliminated.
Machinations diagrams use End Conditions to specify end states. End Conditions are square Nodes with a smaller, filled square inside (the same symbol that is used to indicate the stop button on most audio and video players).
End Conditions must be activated by an Activator. In this case, Activators are used to specify the end state of the game.