Besides Game Theory for Social Sciences (von Neumann, Morgenstern, Nash) and Nim-like Games (Berlekamp, Conway, Guy) there are at least three more flavors of game theory.
Differential Games or Continuous Pursuit-Evasion Games about which I know nothing.
Infinitely Long Discrete Games or "Polish games" introduced by Mazur, Banach, Ulam, Steinhaus, Mycielski, with applications to descriptive set theory and general topology. There may be some good books on the subject but they are over my head as they involve advanced set theory.
Tic-Tac-Toe-like Games, i.e., the other kind of combinatorial/recreational game theory. Here I can recommend a book (making this an answer rather than a comment): Combinatorial Games: Tic-Tac-Toe Theory by József Beck.