---
title: "Gaslight on the Thames — App Overview"
url: https://marlvel.ai/apps/gaslight-on-the-thames
category: Games
developer: Calum MacLean
platforms: ios
rating: N/A (0 ratings)
pricing: free
report_level: overview
generated: 2026-05-05
last_verified: "2026-05-05T07:12:26.092Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This is a local-play social deduction game that leverages individual mobile devices to facilitate hidden-role gameplay.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Games |
| Rating | N/A ★ (0) |
| Pricing | free |
| Platforms | iOS |
| Latest Version (iOS) | 1.4 |
| Developer | Calum MacLean |

<!-- SECTION: Summary -->
## What is Gaslight on the Thames?

Gaslight on the Thames is a local multiplayer social deduction game set in Victorian London for 3-8 players. Participants use individual iPhones or iPads to share clues and identify a hidden traitor, Professor Moriarty, who provides false intelligence to derail the investigation.

<!-- SECTION: Key Features -->
## Key Features

- **Local Multiplayer**: Supports 3-8 players using individual iPhones or iPads without requiring an internet connection.
- **Asymmetric Roles**: Players are assigned unique roles including Detective, Professor Moriarty, Sherlock Holmes, and Dr. Watson, each with specific knowledge or agendas.
- **Deduction Mechanics**: Detectives must identify the criminal by analyzing secret words related to a Location, Evidence, and a Suspect while spotting contradictions.
- **Deception Gameplay**: The Moriarty player must blend in by providing one genuine word and two lies to mislead the group.

<!-- SECTION: Target Audience -->
## Who is it for?

Social gamers looking for an offline, device-based deduction experience.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/gaslight-on-the-thames/id6753612009?uo=4)
- [Full Intelligence Report](https://marlvel.ai/apps/gaslight-on-the-thames)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/gaslight-on-the-thames).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*