Using genetically optimized artificial intelligence to improve gameplaying fun for strategical games

  • Authors:
  • Christoph Salge;Christian Lipski;Tobias Mahlmann;Brigitte Mathiak

  • Affiliations:
  • University Hertfordshire;TU Braunschweig;Braunschweig School of Arts;TU Braunschweig

  • Venue:
  • Sandbox '08 Proceedings of the 2008 ACM SIGGRAPH symposium on Video games
  • Year:
  • 2008

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Abstract

Fun in computer games depends on many factors. While some factors like uniqueness and humor can only be measured by human subjects, in a strategical game, the rule system is an important and measurable factor. Classics like chess and GO have a millennia-old story of success, based on clever rule design. They only have a few rules, are relatively easy to understand, but still they have myriads of possibilities. Testing the deepness of a rule-set is very hard, especially for a rule system as complex as in a classic strategic computer game. It is necessary, though, to ensure prolonged gaming fun. In our approach, we use artificial intelligence (AI) to simulate hours of beta-testing the given rules, tweaking the rules to provide more game-playing fun and deepness. To avoid making the AI a mirror of its programmer's gaming preferences, we not only evolved the AI with a genetic algorithm, but also used three fundamentally different AI paradigms to find boring loopholes, inefficient game mechanisms and, last but not least, complex erroneous behavior.