Adversarial Behaviour Debugging in a Two Button Fighting Game

We introduce the concept of Adversarial Behaviour Debugging (ABD), using intelligent agents to assist in the debugging of human-authored game AI systems, and Bonobo, an ABD system for Unity. To investigate the differences between ABD and traditional playtesting, we collected gameplay data from Bonobo agents and human testers playing against a buggy AI opponent. We present a comparison of the differences in gameplay and an online study on whether these differences affect observers perceptions of the AI opponent. We found that while there were clear differences, ABD compares favourably to human testing and has the potential to offer a distinct perspective.