Gaslight on the Thames

Victorian London. Three clues. One criminal mastermind. Can you unmask Professor Moriarty before he escapes into the fog? Gather your friends for deception & deduction!

London, 1887. The fog rolls thick over the Thames. Scotland Yard has uncovered three cryptic clues—but Professor Moriarty has infiltrated the investigation with corrupted intelligence.

Can you unmask the criminal mastermind before he vanishes into the night?

Gaslight on the Thames is a social deduction game for 3-8 players. Gather your friends with an iPhone or iPad each—no internet required. Each detective receives three secret words: a Location, Evidence, and a Suspect. But one player is Moriarty, armed with ONE genuine word and TWO deadly lies.

Share cryptic clues. Listen for contradictions. Vote to expose the criminal.

Under the gaslight, every truth casts a shadow.

UNIQUE ROLES, HIDDEN AGENDAS • DETECTIVE – Trust your fellow investigators and find the truth • PROFESSOR MORIARTY – Blend in with false intelligence and escape capture • SHERLOCK HOLMES – You know everything... but can you guide the investigation without revealing yourself? • DR. WATSON – You know Moriarty's one genuine word. Use it wisely. • IRENE ADLER – Your mission: get yourself eliminated. If you succeed, everyone loses.

Each role changes the game. Every player has secrets.

HOW TO PLAY

1. GATHER – 3-8 players on the same network
2. RECEIVE YOUR INTELLIGENCE – Three secret words and your role
3. GIVE CLUES – Two rounds to share cryptic hints (never say your words!)
4. DISCUSS – Compare notes and find contradictions
5. VOTE – Unmask Moriarty... or fall victim to his deception

Games last 15-30 minutes. Quick setup. Deep strategy.

FEATURES Local multiplayer on WiFi – no internet required 5 unique roles with asymmetric information Privacy Mode to hide your secrets from prying eyes Practice Mode with AI detectives to learn the game Victorian atmosphere with gaslit aesthetics Built-in QR codes to invite friends quickly Player statistics and win tracking

PERFECT FOR • Game nights with friends • Parties and gatherings • Fans of social deduction games • Anyone who loves mystery and deduction • Groups looking for a quick, strategic party game

"The game is afoot!" – Sherlock Holmes

Download now and step into the shadows of Victorian London. Can you separate truth from lies before Moriarty escapes?

3-8 players. One mastermind. Infinite deception.