University of Bristol

What Good Are AI NPCs?: Lessons from a Large-scale Player Study

The study demonstrates that generative AI-driven non-player characters can deliver deeply engaging, emotionally resonant gameplay.

• Generative AI NPCs drive high player engagement, with 97% of participants reporting high immersion and 96% rating their overall enjoyment as high.
• The integration of AI NPCs maintains a balance between agency and guidance, as evidenced by 80% of players achieving top scores for play engrossment and 90% praising the creative freedom of the open-ended design.
• Cognitive load remains manageable during AI-driven interactions, with participants reporting NASA-TLX mental demand scores of 64.7 and performance scores of 52.7.