Adapted Visual Field (AVF) of champion TPG policy graph in Up 'N Down. Black regions indicate areas of the screen not indexed. (a) Shows the raw game screen. (b) Shows the preprocessed state space, where each decimal state variable (0–255) is mapped to a unique colour. (c) Shows the AVF for a single team along the active path through the policy graph at this time step, while (d) shows the AVF for the policy graph as a whole. Both AVFs exhibit patterns of sensitivity consistent with important regularities of the environment, specifically the zigzagging track.