This book is devoted to game theory and its applications to environmental problems, economics, and management. It collects contributions originating from the 12th International Conference on "Game Theory and Management" 2018 (GTM2018) held at Saint Petersburg State University, Russia, from 27 to 29 June 2018.

- An Example of Reflexive Analysis of a Game in Normal Form. - Differential-Game-Based Driver Assistance System for Fuel-Optimal Driving. - On the Selection of the Nash Equilibria in a Linear-Quadratic Differential Game of Pollution Control. - Endogenous Formation of Cooperation Structure in TU Games. - Analysis of Competitive and Cooperative Solutions in Dynamic Auction Games. - A-Subgame Concept and the Solutions Properties for Multistage Games with Vector Payoffs. - A Dynamic Model of Bertrand Competition for an Oligopolistic Market. - Pure and Mixed Stationary Nash Equilibria for Average Stochastic Positional Games. - Variational Inequalities, Nash Equilibrium Problems and Applications: Unification Dynamics in Networks. - About the Looking Forward Approach in Cooperative Differential Games with Transferable Utility. - Dynamically Consistent Bi-level Cooperation of a Dynamic Game with Coalitional Blocs. - Optimal Incentive Strategy in a Markov Game with Multiple Followers. - How Oligopolies May Improve Consumers' Welfare? R&D Is No Longer Required!. - Guaranteed Deterministic Approach to Superhedging: Lipschitz Properties of Solutions of the Bellman-Isaacs Equations. - Evaluation of Portfolio Decision Improvements by Markov Modulated Diffusion Processes: A Shapley Value Approach. - Conditionally Coordinating Contracts in Supply Chains.