Five Nights at Freddy’s: Security Breach – Ruin is an engaging free story DLC that immerses players in the eerie environment of Freddy Fazbear's Mega Pizzaplex. Players assume the role of Cassie, tasked with navigating the dark, decaying pizzeria to rescue her friend Gregory. Utilizing a Faz-Wrench, a Roxy-Talky, and a unique bunny mask, players must solve challenges and evade dangers within the haunted ruins.

The gameplay emphasizes exploration and survival, maintaining the franchise's hallmark tension and suspense. As Cassie, players will encounter various obstacles and enemies while piecing together the story behind the abandoned Pizzaplex. This DLC offers an exciting continuation of the narrative, allowing players to delve deeper into the Five Nights at Freddy's universe while providing a fresh perspective and challenges.