Game AI Uncovered: Volume Four continues the series with another collection of chapters from twenty of the top game AI professionals and researchers, from around the world. Each chapter includes wisdom, ideas, tips, and tricks that were used in the development of video games. The techniques discussed in these pages cover the underlying development of a wide array of published titles, including Undisputed, Dirt, Grid, Wherewolf, Psychonauts 2, and Hawken Reborn. Contained within this volume are insights that cover a host of different areas within game AI, including influence maps, possibilistic logic, utility AI, director AI, natural movement, stable reaction systems, believable villager NPCs, procedural generation of dungeons, crowd movement and flow fields, cooperative planners, combat pacing, the corridor map method, and boss AI. Beginners to the area of game AI, along with professional developers, will find a wealth of knowledge that will not only help in the development of their own games but will spark ideas for new approaches. This volume includes chapters written by Dr Nuno Vicente Barreto, Steven Dalton, Matt Eland, David Guzman, Tobias Karlsson, Vincent Breton Kochanowski, Slavomir Krbyla, Dr Nic Melder, Alessia Nigretti, Víctor Portabella, Baptiste Rimetz, Shaun Reeves, Paul Roberts, Mateo Saldivar, Andrea Schiel, Dr Tommy Thompson, Marc Vassallicci, Rebecca Vessal, Braeden Warnick, and Yannick Richeux.