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Doctor Who: The Lonely Assassins is a 2021 found-phone mystery video game developed by Kaigan Games and published by Maze Theory.

It was released for iOS and Android devices and PC through GOG.com, Steam, and the Epic Games Store on 19 March 2021. As of March 2021, the Nintendo Switch release was delayed,[1] and launched alongside PlayStation 4, PlayStation 5, Xbox One, and Xbox Series X/S versions on 12 August 2021.

The game revolves around the player, as themselves, having discovered Larry Nightingale's phone and investigating the contents of the phone and what happened to Larry with the help of Petronella Osgood.


Amidst a sinister series of events at a seemingly abandoned house in London, someone goes missing, and you find their phone. When it begins to self-destruct, ex-UNIT scientist Petronella Osgood enlists your help to uncover hidden clues and solve cryptic puzzles.

Will you unravel the truth behind the chilling disappearance before it’s too late? But remember: don't turn your back, don't look away and DON’T BLINK.


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Maze Theory[]

Kaigan Games[]

  • Game Design - Jeremy Ooi
  • Writers
    • Amelia Chung
    • Priya Kulasagaran
    • Rebecca Hee
  • Art & UI Design
    • LeeYing Foo
    • Rex Naythian
  • Technical Lead - Azmi Shah
  • Programming
    • Lee Jen Ling
    • Alex Lee Jen Fung
  • Intern - Naqib Pauzl
  • CEO - Shah Rizar
  • Marketing Assistant - Hannah Hisham
  • Operations
    • Suhana Sulaiman
    • A'yunie Inanie Binti Arzmi
  • Audio Production - Hello Universe

BBC Studios[]

  • Senior Producer - Kevin Jorge
  • Associate Producer - Thomas Lumeau
  • Script Supervisor - Gabby De Matteis
  • Creative Development Executive - Ross McGlinchey
  • Head of Brand, Doctor Who - Vanessa Hamilton
  • Creative Producer, Live Entertainment - Jeff Parker
  • InTheory Playtesters
    • Tim D
    • Steve D
    • Marshall S
    • Lee H
    • Matthew H
    • Dean A
    • Belz
    • Adam G
    • Kian
    • Nicky S
    • Paul M
    • Oliver S
    • Brandon D
    • Becky M
    • Francis G
    • Doc N
    • Dave W
    • Mark N


Story notes[]

Screenshots of gameplay were released to help promote the game.

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The Lonely Assassins pack was released on May 13th, 2021 for Doctor Who: Worlds Apart which added Glitch Angel frames for cards.[2]


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Production errors[]

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External links[]