Monster Detective

Step into Nightfall City, where monsters hide in plain sight and every shadow holds a secret. Monster Detective is an offline detective simulation where you run the Nightfall Agency, take on procedurally woven cases, and build a reputation as the city's sharpest investigator.

Pick up new files on the Case Board and follow leads across districts on the City Map. Visit crime scenes, collect clues tied to monster species, and study each detail on your Evidence Board. Connect findings to persons of interest, map suspicion levels, and spot planted evidence in your Forensics Laboratory using modules like the Forgery Detector, Blood Lab, and Magic Analyzer.

Question suspects in structured interrogations. Watch for lies, misleading answers, and contradictions. When you are ready, make your Final Accusation: choose the culprit and present the proof that closes the case. Wrong calls hurt your reputation; solid evidence earns coins, XP, and career progress.

Grow your agency over time. Hire monster agents, upgrade specialists, and improve lab modules for faster, deeper analysis. Follow Story arcs that unfold across Nightfall City and review your Stats to track solved cases, reputation, and detective level.

Features at a glance:

• Case investigations from crime scene to accusation
• Evidence board with suspicion mapping
• Forensics lab and upgradeable analysis modules
• Suspect interrogations with branching dialogue
• Agency management: hires, upgrades, and currency
• City map, story arcs, and career statistics
• Adjustable audio, haptics, hints, and dialogue speed
• Fully offline play with progress saved on device

No account required. No in-app purchases. Just you, the clues, and the monsters of Nightfall City.