A probability map is a more complex and detailed version of a possibility map because it relies on probabilities in order to change the behavior of the character, rather than a simple on or off trigger. Its similarity with the possibility map is that it's also required for planning ahead the possible states for our character. This time, however, we add to it a percentage, using which the AI will calculate what behavior he will be using. Imagine the next example using the situation that we previously created for the possibility map our enemy AI could be more aggressive in the daytime than at night. For that, we create a statement that explains to our enemy that if it's night time, there is a lesser chance of seeing the player character, and for that reason it will choose a more defensive approach instead of an aggressive one. Or, simply, we could define that our enemy calculates the probability of killing the player simply based on the distance between the two characters...