 The material in this entry will be limited to the logical analysis of strategies and preferences of (groups of) individuals in normal form games. It will not cover the use of game theory to study logical languages nor the role of epistemic concepts in strategic decisions. It will also not cover aspects of sequential decisions-making, typical of strategic reasoning in extensive games. An account of those can be found in the related entries  logic and games,  epistemic foundations of game theory  (see also van Benthem, Pacuit, &amp; Roy 2011 and van Benthem 2014).