This textbook for master programs in economics offers a comprehensive overview of microeconomics. It employs a carefully graded approach where basic game theory concepts are already explained within the simpler decision framework. The unavoidable mathematical content is supplied when needed, not in an appendix. The book covers a lot of ground, from decision theory to game theory, from bargaining to auction theory, from household theory to oligopoly theory, and from the theory of general equilibrium to regulation theory. Additionally, cooperative game theory is introduced.  This textbook has been recommended and developed for university courses in Germany, Austria and Switzerland.