 Coalitions and Networks Nothing has been said so far about social or structural relations between players: they move individually and in interaction with all other players. However, in many games, groups of players can team up to jointly pursue goals, possibly in competition with other groups. Coalitions are a natural, but non-trivial extension of the logical frameworks introduced here, as strategic abilities of groups may exceed those of all members combined, see Peleg (1997), Van de Putte &amp; Klein (2021, 2022), and the entry on  coalition powers in games.  In other studies of social phenomena, the set of players is equipped with an additional network structure. An agents’ outcome or behavior will then depend upon what network neighbors do (Baltag et al. 2019; Christoff 2016). Lastly, games on networks are closely related to information flows in social networks, as studied in depth by Liu, Seligman, and Girard (2014) and Seligman and Thompson (2015) from a logical perspective.