Average Playtime: 4 hours

The Infectious Madness of Doctor Dekker

Add to
My games
Add to
Wishlist 6
Save to

Click to rate



YOU are a psychiatrist, trying to solve a murder whilst treating the unusual patients of the recently deceased Doctor Dekker - but nothing is as it seems.

Type any question - and your patients will reply in full screen video.

They'll have questions for you too but be careful what you say. Your words will determine their eventual fates, and your own!MAIN FEATURES
  • FMV! - 1600+ full screen HD video responses
  • FREE TEXT INPUT - Ask whatever you want, type questions, phrases or just keywords.
  • MULTIPLE ENDINGS - Find out whodunit, and what happens to you and your patients...
  • MULTIPLE STORIES - 6 main suspects and 5 side-quests inc. John Guilor (Contradiction)
  • RANDOM MURDERER - Chosen at the start of the game to combat spoilers
  • SIMPLE UI - View evidence, make notes, watch replays, see your question history
  • ACHIEVEMENTS - Steam achievements and a dynamic descriptive rating system

WARNING - This game contains mature themes and psychological horror (including sexual themes, violence and suicide) and by its very nature is open to wide interpretation - so although not originally intended, some topics such as rape and parricide can also be inferred. Recommended for adults only.FULL DETAILSThe Infectious Madness of Doctor Dekker is a Lovecraftian FMV murder mystery, which gives players full freedom to question suspects by typing their own questions instead of picking them from a predetermined list. There are no point and click puzzles to solve, just questions to ask and evidence to inspect.

Finding out who killed Dr Dekker is only one part of the puzzle; working out how to fix the chaos he left behind will be so much trickier… As well as providing clues to the murder, each patient has their own bizarre problem they need your help with – from time manipulation and re-animated loved ones to horrors under the sea.

Complete with an atmospheric soundtrack, The Infectious Madness of Doctor Dekker invites you to explore the shadow reality that your patients inhabit – a world full of paranormal strangeness and horrors that go bump in your head, where all you have to rely on is your own mind.

Just try not to lose it...CREDITSYou.............................The Doctor

Aislinn De’Ath..................Marianna
Bianca Beckles-Rose........Jaya
Dom Lister......................Nathan
Helen Jenkinson..............Elin
Helga Ragnars................Claire
Millin Thomas..................Bryce
Mark Kitto.......................Professor Alderby
and guest starring John Guilor as Professor Warwick.

Additional patients played by ...
Carolyn English, Catherine Stacey, John Shields and Rosie Hefferon.

Directed by Tim Cowles.FAQHow do you progress through the game?You play through a series of five therapy sessions. Each session you'll talk to several patients, and traffic lights tell you which patients you've unlocked so you can move on. Yellow is unlocked, but you can keep talking to reach green and find all their possible responses. On the final accusation screen you choose whodunit and if you've picked correctly the game finishes and plays your ending videos. Automatic saves mean there's no way to rollback something you've said to a patient, so be careful with that. That's it in a nutshell, but we can't tell you everything, or there'd be no surprises...What happens if I ask a question they don't have an answer for?As long-time fans of FMV games and point-and-click adventures, we're all-too familiar with the 'That's not gonna work' or 'I think I'll have to try that again' phrases repeated over and over. That's why we've given the patients lots of different ways of saying "I don't know" - most have over 40 in fact, including some that contain clues that lead you to new storylines.Is this game an AI simulator?No. A lot of the time you might get "don't know" answers to your questions, because there are only 1600+ actual filmed responses in the game. Listen to what patients say and follow their lines of conversation to stay on track. Responses are keyword based, so literally typing words patients have already used will do half the job for you.How many acts are there?There are five acts in total. Each act is a self-contained episode, so it's possible to ask questions (and get responses) in any order to reveal the story. Some decisions you make will affect future acts, so once you hit the continue button there's no going back!What if I get stuck?We've tried to design the game so you don't get stuck, but if you do, just type 'Hint'. Think of it as asking for advice, and you'll need a lot of it if you're trying to find every response (aka going green). Make sure you've properly watched the help video too.If the murderer is chosen at random, does that mean it's replayable?The game can be replayed, but it wasn't designed with that in mind. We wanted everyone to be able to experience as much of the game as possible without needing multiple plays, so branching generally removes just a few responses at a time. That said, you will have to replay the game if you want to find *all* the videos and unlock all the achievements and endings.
Release date
D'Avekki Studios Ltd
Wales Interactive
D'Avekki Studios
D'Avekki Studios Ltd, Wales Interactive Ltd.
Age rating
13+ Teen

System requirements for PC

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

System requirements for macOS

  • OS: OSX 10.9 onwards, 64 bit
  • Processor: Intel
  • Memory: 2 GB RAM
  • Graphics: Intel HD3000 or comparable
  • Network: Broadband Internet connection
  • Storage: 20 GB available space
  • Additional Notes: Must be capable of playing full HD videos
Edit the game info
Last Modified: May 18, 2020

Where to buy

Xbox Store
PlayStation Store
Nintendo Store

Top contributors


1 edit
The Infectious Madness of Doctor Dekker w/ Dodger [Part 1] - She GOT me!
May 22, 2017
Jesse Cox
The Infectious Madness of Doctor Dekker w/ Dodger [Part 4] - Loop Day
May 25, 2017
Jesse Cox
The Infectious Madness of Doctor Dekker w/ Dodger [Part 6] - That is NOT cool Bryce!
May 29, 2017
Jesse Cox
The Infectious Madness of Doctor Dekker w/ Dodger [Part 9] - WE KNOW THIS GUY!
Jun 1, 2017
Jesse Cox
The Infectious Madness of Doctor Dekker w/ Dodger [Part 8] - We did what now!?
May 31, 2017
Jesse Cox
Doctor Dekker - Best of Jesse Cox & Dodger
Sep 17, 2017
View all videos
5,330 items
Two Working Days
Sixteen hours played
Hundy Hints
Excellent hint usage.
Second Time Lucky
Solved in two
Totes Mad
Three hundred and fifty insanity points reached
One thousand responses revealed!
view all achievements
37 items
Detective Dan solves a Murder!
LEWIS GETS MORE INSANE - Lewis & Lydia! - The Infectious Madness of Doctor Dekker!
THE MADNESS BEGINS! - Lewis & Lydia! - The Infectious Madness of Doctor Dekker!
View all streams
100 items

The Infectious Madness of Doctor Dekker reviews and comments

Translated by
Microsoft from French
So it's not bad. This is the interrogation in FMV, so the game is based on 80% on the actors and their character. The storylines of the patients are not upsetting but the performance of the actors assures enough to put the atmosphere well and invest you in their madness. The system to ask questions is doing well, sometimes happens even to make natural; the rest of the time, there is always the option to ask for a clue to find the thread. Two real problems: already, it's a little Longuet. A session with a patient can take easily 20 minutes, there are 5 main patients plus bonus consultations, several acts to chain... In the end, we're glad it ends. Then the outcome of the game. The culprit is different to each part, which is a false good idea. As everyone can potentially be guilty, each character has a plotline that provides mobile, opportunity and clues to the indicting. Whoever is chosen by the game will receive a few more conversations proving his final guilt; the others, no. It gives this weird moment to the end where everyone was ready to kill Dekker, PIF PAF pouf it is you who was drawn by lot you are the culprit. Not very satisfying as a mystery. That said, murder is not the most important point of the narrative so good. Overall, it's a good time to spend if you enjoy this return to fashion of the FMV
Translated by
Microsoft from Deutsch
Genre An FMV (Full Motion Video) Murder Mystery Adventure Story The Psychiatrist Dr. Dekker Was murdered, one of his Patients becomes suspicious. We play the new Doctor and now we have to find out who murdered Dr. Dekker and why. Gameplay We are in the treatment Room of Practice throughout the game and talk to our (formerly Dr. Dekker's) Patients and have to find out through various Questions who might have murdered Dr Dekker. Of course, we also have to try to heal our Patients. There are a total of 5 Acts and in each Act we have Links the Patient list and can switch between Patients at any Time to ask different Questions. The Questions are partly predetermined, but after a certain Amount of time we have to ask questions ourselves. Our Character also takes helpful Notes in between and our charming Assistant Helps us more often. After the fifth Act, we then have to decide who we consider to be Dr. Dekker's Murderer. The Killer is next in every play through always Random determined Achievements There Are a total of 35 Successes. These are relatively Time Consuming to get And it is several times playing through necessary. Some Game Hours successes such as 25 Hours playing the Game. Or to catch the right Killer trying at the first, second, third, etc., it makes it pretty Grind heavy. Pro/Contra + Interesting Story + Good Activity + Good Acting Performance + Sound & Music All Good + Good length (10-12 Hours) + Collectible cards + achievements-To get all The achievements you have to play through the Game at least 7-8 times conclusion A very exciting FMV Adventure with Top Acting performance. Definitely recommended
read more