Gaslight on the Thames icon
In development

Gaslight on the Thames

A social deduction game for 3–8 players. Scotland Yard’s best gather in person over local wireless play to uncover the mole—Professor Moriarty—before he turns their own intelligence against them.

How a round unfolds

  1. Intelligence Gathering: Across two passes, each detective drops cryptic hints about their secret Location, Evidence, and Suspect words—without saying them outright.
  2. Discussion: A timed debate to pick apart those clues, cross-reference alibis, and flag contradictions that point to Moriarty.
  3. Vote & Reveal: Everyone casts a vote. The target exposes their role; win conditions trigger instantly, including Moriarty’s last‑ditch guess at Sherlock or Watson.

Detectives share matching word trios, while Moriarty hides among them with two decoys. Every nudge, pause, and eyebrow raise becomes evidence.

Roles in the fog

  • Sherlock Holmes: Knows all genuine words plus Moriarty’s decoys and must steer the table without being exposed.
  • Dr. Watson: Knows the exact genuine word Moriarty possesses and watches how players hint around it.
  • Irene Adler: The double agent who wins only if she convinces the squad to accuse her.
  • Moriarty: Survives by blending in—or, if caught, by naming Sherlock or Watson on the way out.

Optional roles keep matches fresh, morphing alliances and forcing new deduction tactics each time.

Match modes & play style

Built for couch co-op game nights: every player brings an iPhone or iPad and connects over local Multipeer Connectivity—no internet or shared Wi-Fi required. Choose a single Practice game, or run best-of 3, 5, or 7 match series with cumulative scoring for correct calls and close escapes.

Expect quick 15–20 minute rounds, tight time boxes to prevent analysis paralysis, and plenty of table talk to keep suspicion simmering.

Hosting a table requires a one-time in-app purchase; joining a game is free.

Want to follow development or offer feedback? Email support@littledynamite.co.nz with “Gaslight me” in the subject.