 Remark While all examples so far concerned two-player games, no such restriction is needed. Both extensive games and strategic form games work for any number of players, although occasional subtleties may occur. A few will be mentioned below. Moreover, with more players, possible coalitions enter the picture, a topic that will not be treated in this entry. Finally, selected aspects of agency may sometimes enter through the back door. Many scenarios in real life contain external chance events outside of any player’s control, such as a roll of a die, weather conditions, or technical malfunctions. Such factors can usually be incorporated into a logical analysis by admitting Nature as additional player.