Proceedings of the ILLC Workshop on Logic and Games. Held in Amsterdam, November 19-20, 1999 Editors: Pauly, M.; Baltag, A. These proceedings contain the abstracts of the following talks: Semantics of Informational Independence, by Gabriel Sandu Informational Independence, by Theo Janssen Dynamic Semantics Meets Game Theory, by Paul Dekker Spaces to Play: Topo-games, by Marco Aiello and Johan van Benthem A Logic for Games, by Alexandru Baltag Probability in Dynamic Epistemic Logic, by Barteld Kooi The Semantics of Actions in Knowledge Games, by Hans van Ditmarsch On the Logical Foundations of Game Theory, by Arnis Vilks Economics and Language, by Ariel Rubinstein Values of Questions and Q-A Games, by Robert van Rooy The Game of Interrogation, by Jeroen Groenendijk Games as Acceptors, by Peter van Emde Boas Dialogue Games for Connexive Logic, by Helge Rueckert Subgame Perfect Nash Equilibria in Dynamic Logic, by Paul Harrenstein, Wiebe van der Hoek and John-Jules Meyer Keyword(s): logic, games