Agent Nox
Agent Nox is a daily detective game where you interrogate AI suspects, examine forensic evidence and compare a distorted voice clip to identify the culprit in a new case each morning.
Play Agent NoxA fresh puzzle is waiting for you.

Agent Nox is a free browser detective game that delivers a new murder mystery every morning. Players inspect crime scenes, read forensic and autopsy reports, interrogate suspects via AI-generated dialogues and use a distorted audio clue to match a suspect's voice. The experience runs entirely in the browser without download.
Cases combine logic puzzles, forensic analysis and conversational interrogation. Each suspect has a unique AI-generated reaction to player questions and a built-in stress or lie indicator appears during interviews. A daily evidence item unlocks and an audio intercept becomes available shortly after the investigation begins to help identify the perpetrator.
A competitive layer ranks players and agencies: daily leaderboards award three top players with medals at midnight, and collective agency rankings accumulate over seven days. Connected accounts can access week catch-up for missed cases until Sunday midnight, while anonymous play remains possible without creating an account.
How to play Agent Nox
- Agent Nox: open the daily dossier to read the crime scene summary and initial clues.
- Examine forensic reports, autopsies and scene images to collect physical evidence and leads.
- Start interrogations and type questions to the AI suspects, observing their responses and stress indicators.
- Wait for the intercepted audio file to unlock, then listen and compare the distorted voice to suspects.
- Make your accusation by selecting the suspect you believe is the culprit before using up your allowed attempts on the audio match.
Tips for Agent Nox
- Prioritize physical evidence and timelines from autopsy and scene reports before starting long interrogations.
- Ask suspects specific, checkable questions about times and locations to expose inconsistencies rather than broad open questions.
- Use the stress and lie indicators shown during AI interviews as one data point among forensic clues, not definitive proof.
- When the audio clue unlocks, conserve attempts by eliminating suspects whose alibis and voice characteristics clearly mismatch the recording.
Agent Nox FAQ
What is Agent Nox?
Agent Nox is a daily online detective game where you solve a new murder mystery each morning by interrogating AI suspects, analyzing forensic evidence and matching a distorted voice recording to a culprit; the game runs in your browser without download and presents AI-generated dialogues and forensic reports for each case.
Is Agent Nox free to play?
Yes, Agent Nox is free to play; the site describes the game as gratuit and accessible directly in the browser with no required download.
How often does Agent Nox publish a new case?
A new case is published every morning; the site states there is a new, unique investigation each day and daily evidence and leaderboards reset at midnight.
How many attempts do I get to match the voice recording?
You get three attempts to match the intercepted audio to a suspect; the audio comparison awards up to 100 points for a correct match and the attempts are shown as 1st, 2nd and 3rd tries.
Can I replay past Agent Nox cases?
Connected accounts can catch up on missed investigations from the week until Sunday midnight; this catch-up feature is reserved for logged-in players and does not award points toward past leaderboards.
Does Agent Nox work in a web browser without installation?
Yes, Agent Nox runs fully in the browser with no download required; the game is presented as 100% playable in your browser, implying it works across standard desktop and mobile browsers.
Are the suspect dialogues prewritten or generated?
Suspect dialogues are generated by AI and adapt to your questions; the site explains each suspect's responses are uniquely produced for each playthrough and include stress or lie indicators during interrogation.
Is there a competitive leaderboard or rewards system in Agent Nox?
Yes, Agent Nox features daily leaderboards and agency rankings with the top three daily players receiving medals at midnight; agencies also compete with weekly cumulative scores and various badges and honors are unlocked through play.