PCGame

The Infectious Madness of Doctor Dekker

Live-action murder mystery where you question a dead psychiatrist's patients

D'Avekki Studios Ltd · Released May 19, 2017

AdventureCasualIndieSimulation

Reviews
Very Positive
82% of 570
Recent reviews
Not enough recent
Players
0
daily peak, Oct 30, 2026
Steam Deck
Playable
Last update on Steam
8 years ago
Nov 22, 2017
Minimum PC
HD3000
2 GB RAM · 20 GB disk
Full requirements

Metacritic: 78/100 (critic reviews)

What is The Infectious Madness of Doctor Dekker?

You play a psychiatrist treating Doctor Dekker's former patients while investigating his murder. This single-player mystery unfolds through live-action interviews: you type questions or select suggested prompts, watch replies, and inspect evidence. The killer is chosen at the start of each game, and your answers shape multiple endings.

For you if...

  • +you enjoy psychological horror with stories open to interpretation

Not for you if...

  • −you want action or traditional point-and-click puzzles

What players say

82% of 570 reviews are positive

Players praise the acting and the central mystery. Their most common complaint is that questions require very specific wording to trigger responses; some also find the pacing slow and the hint system cumbersome.

Screenshots and trailer

The Infectious Madness of Doctor Dekker screenshot 1

The Infectious Madness of Doctor Dekker system requirements

Minimum: HD3000, 2 GB RAM, 20 GB of disk space.

As published by the developer.

Can my PC run The Infectious Madness of Doctor Dekker?

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Minimum

OS
Windows 7,8,10
Processor
Pentium 4 SSE2 onwards (dual core)
Graphics
Intel HD3000 or comparable
Memory
2 GB RAM
Storage
20 GB available space
Notes
Must be capable of playing full HD videos

Does The Infectious Madness of Doctor Dekker have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does The Infectious Madness of Doctor Dekker run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

  • Sometimes shows mouse, keyboard or non-Deck controller icons
  • Some text entry requires manually opening the on-screen keyboard
  • Some in-game text is small and may be hard to read
  • Not fully functional without an external keyboard
  • All functionality is accessible with the default controller configuration
  • Default graphics settings perform well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows, macOS, Linux
Achievements
35
Steam features
Family Sharing, Trading cards
Age rating
17+
Languages
Full audio: English.

Does The Infectious Madness of Doctor Dekker use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam

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