This book brings together papers of well-known specialists in game theory and adjacent problems. It presents the basic results in dynamic games, stochastic games, applications of game theoretical methods in ecology and economics and methodological aspects of game theory. Contents: Preface; Numerical Studies on Paradoxes in Non-cooperative Distributed Computer Systems; On the Borel and von Neumann Poker Models; Axiomatic Characterisation of Boolean Vote Aggregators; A Fishery Game Model with Age-Distributed Population: Reserved Territory Approach; The Effects of Incomplete Information in Stochastic Common-Stock Harvesting Games; Two-level Imitative Problems in Stock Markets and Bayesian Estimation of Credibility Parameters; On Nash Equilibria in Stochastic Games of Capital Accumulation; Cooperative Solution for Games with Random Duration; Best-choice Games where Arbitration Comes in; A 'Quantitative' Minimax Theorem; On Bruss' Stopping Problem with General Gain Function; Semi-Definite Programming Approach for Bandwidth Allocation and Routing in Networks; Cournot Equilibrium and Competition via Supply Functions; Some Results on Convergence of Learning Algorithms for Games on Networks