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arXiv · 2508.19288

Tricking LLM-Based NPCs into Spilling Secrets

Kyohei Shiomi·Zhuotao Lian·Toru Nakanishi·Teruaki Kitasuka
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Abstract

Large Language Models (LLMs) are increasingly used to generate dynamic dialogue for game NPCs. However, their integration raises new security concerns. In this study, we examine whether adversarial prompt injection can cause LLM-based NPCs to reveal hidden background secrets that are meant to remain undisclosed.

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Kyohei Shiomi, Zhuotao Lian, Toru Nakanishi, Teruaki Kitasuka. 2025-08-25. Tricking LLM-Based NPCs into Spilling Secrets. https://arxiv.org/abs/2508.19288

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