ABSTRACT
In this chapter we consider how cooperation can evolve in a neighborhood of players, i.e., a group of spatially proximal players. In such situations we deal with the interaction of each player with the rest of its neighbors. We revisit the Prisoner’s Dilemma game to investigate the evolution of cooperation in such a spatially interactive situation. The original Prisoner’s Dilemma game consists of the interaction between two players as we have seen in Chapter 2, where cooperation may evolve despite their selfish nature. Since in this case we are dealing with a neighborhood, i.e., a group of selfish players, where each player can interact with all of its direct neighbors, we focus on a variation of the classic Prisoner’s Dilemma known as the spatial Prisoner’s Dilemma [8].
