Why Security Matters in Single-Player Games

This chapter explains why security is important in single-player games, even when there is no online competition or multiplayer system. It argues that cheating and tampering can damage progression, pacing, challenge, narrative flow, save data, and the overall player experience. The chapter also identifies major attack surfaces such as runtime memory tampering, save file manipulation, and exposed scripting or engine functions. Rather than presenting security as a way to control players, it frames security as a design responsibility that protects the emotional and structural integrity of the game. Through examples and case studies, the chapter shows how weak protection can lead to broken gameplay, misleading reviews, corrupted data, and damaged developer reputation. It concludes by introducing a layered defense mindset focused on resilience, validation, detection, and preserving the intended gameplay experience.