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The Infectious Madness of Doctor Dekker 2

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The Infectious Madness of Doctor Dekker 2 screenshot 1
Gameplay Trailer trailerWatch trailer on Steam ↗

The Infectious Madness of Doctor Dekker 2

D'Avekki Studios Ltd · Published by D'Avekki Studios Ltd · Official site ↗

Content notice: This game contains strong psychological horror and adult themes including spoken references to suicide and drug and alcohol abuse. For a full list of content warnings please visit the website.

Last updated 28 Sept 2026

An FMV game where YOU are a psychiatrist trying to solve a double murder whilst treating the unusual patients of the recently deceased Doctor Dekker. Ask questions and link answers to determine their fates, and your own!

Free to PlayComing SoonDJCTQ 14Full Controller Support

Free

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Simulation · 2026 · More free games

Explore the twisted psyche of Doctor Dekker’s patients as you piece together clues and make critical decisions. Will your actions determine their fate or yours?

About this game

A missing body. A murdered professor. Five mysterious patients and a former femme fatale.

Play therapist and detective in a twisted Lovecraftian journey through the minds of six questionable suspects.

Will you save your patients or catch the killer? Or can you do both?

Whatever you decide, your assistant Marianna will always be there for you - unless she’s the killer of course…

  • SIMPLE UI - ask questions and respond to patients, watch replays and gather evidence 

  • EXPLORE - link answers together to progress 

  • MISSION TRACKER - your notepad keeps you updated 

  • MULTIPLE ENDINGS - multiple patient outcomes, player fates and killer endings 

  • NO SPOILERS - murderers are chosen at random when the game begins 

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The 5th game from the creators of The Infectious Madness of Doctor Dekker, The Shapeshifting Detective, Dark Nights with Poe and Munro, and Murderous Muses.

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System Requirements

Will my PC run this? →

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10 64-bit
  • Processor: Intel i5-4590 / AMD FX 8350 equivalent or greater
  • Memory: 2 GB RAM
  • Graphics: NVIDIA GeForce GTX 260 or greater or equivalent
  • Storage: 13 GB available space

Recommended

Recommended:
  • Requires a 64-bit processor and operating system

Supported Languages

English*, French, Italian, German, Spanish - Spain
*languages with full audio support

Latest news

  • AnnouncementsOfficial

    Conventions and dev updates

    Since our last update in March we've been working hard on finishing the game - focusing on editing the final 14+ hours of footage. We're close... but the earliest release date now would be the end of the year if nothing else causes delays. We genuinely didn't expect it to take this long but there have been a few "acts of god" behind the scenes that have been slowing us down. In particular, we were moved out of home last March whilst it was stripped and rebuilt (including the Doctor Dekker set) due to a burst underfloor water pipe. We will try and channel this experience into a future character (a possessed plumber perhaps!) but for now just know we've been working as hard as we can over the last 16 weeks, whilst living in 9 different houses. Fortunately our insurance is paying - for some of it 😅In brighter news we've been out in the wild attending conventions whilst on the road. DreamHack Birmingham, Debug Games Festival Norwich and MCM Comic Con London to name a few. We've also been selected for the Brilliant Indie Treasures showcase in Brighton next week. If you can make it down, come and say hi to Tim, and he'll have some stickers for you! After that, the whole team is heading to Colchester for the Rapture Gaming Festival in August. We may have a new character to play for that one but no promises just yet...We were also selected for the 2026 Indie Premier Game Showcase with the awards festival at 7pm ET tonight. Tune in to their YouTube channel if you can - it's midnight for us in the UK but then, what were we going to use our extra hour for anyway... ;-)Klemens and Anna meetup at MCM Comic Con LondonFinally, please hit that wishlist button if you'd like to get more updates and the alert when we release
    Read full article on Community Announcements (D'Avekki Studios)
  • Patch NotesOfficial

    Dekker 2 demo update

    Firstly, a big thank you to everyone who has played the demo and/or wishlisted the game so far! We've enjoyed watching playthroughs and reading all the feedback. Right now we're focused on the main build but we're also giving the demo a little update too, including messages to help highlight things that could be overlooked, like being able to skip replays or toggle notes. There's still nothing to point you in the direction of using arrow buttons to view the other patients though... :o 0.32 demo updates+ Added binding for left click to skip video + Added reminder message to skip video during replay + Added startup note and message that notes can be toggled + Added link accuracy in menu screen + Added message to check link accuracy after some failed link attempts + Added pause / play function to video in replay screen + Added Y button to try link for controller and icon hint + Fallback resolution applied when docking / undocking if resolution unavailable + Changed replay overlays for performance improvements + Volume setting defaults to 10 on first load - Fixed bug where music OST change caused lag in video playback - Fixed bug where display settings weren't applied on launch - Fixed bug where clicking blank space to right of keyword would link it - Fixed controls screen to show left stick click for screenshot mode 🤞Updated Unity to latest LTS versionMarianna contemplates all your choices (Aislinn De'Ath). Scene not in demo.
    Read full article on Community Announcements (D'Avekki Studios)
  • Community & EventsOfficial

    Doctor Dekker 2 demo in Steam Next Fest

    The Infectious Madness of Doctor Dekker 2 demo is now available and will be in the Steam Next Fest starting tomorrow!The demo can be played in around 30 minutes (unless you're trying to find all the video responses - or 'going green', as it used to be called...)There's also a demo feedback form (link in the Steam discussions forum) with 5 questions - including who you'd like to see added to the demo if we're able to expand it before release. Thank you for playing!
    Read full article on Community Announcements (D'Avekki Studios)
  • Patch NotesOfficial

    2025 EoY Update

    We've got a quick last minute update before 2025 disappears into the distance - including some extra game footage and news on the Steam demo coming early next year. There's also an extended Marianna teaser for anyone that would like to see a little more of their favourite siren (or deadliest anyway!)Happy rest of the holidays to everyone - wishing you all a superb 2026!
    Read full article on Community Announcements (D'Avekki Studios)
  • AnnouncementsOfficial

    Dekker 2 Steam Deck Compatibility

    We're currently in the middle of all the things but we've already started testing on the Steam Deck with a native linux build, webm videos and a larger scale UI. There won't be any touchscreen functionality but other than that it should work well. The larger scale UI will also be available on the standard PC build for anyone that prefers the bigger view of things and for playing more comfortably on TV.
    Read full article on Community Announcements (D'Avekki Studios)

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