The Game Census
The Infectious Madness of Doctor Dekker cover art

The Infectious Madness of Doctor Dekker

D'Avekki Studios Ltd · 2017-05-19

SteamGOGPlayStation StoreMicrosoft Store

AdventureCasualIndieSimulation

Modes: Single player · Perspectives: First person

Releases: May 19, 2017 (PC (Microsoft Windows)), May 19, 2017 (Mac), May 19, 2017 (Linux), Jun 05, 2018 (PlayStation 4), Jun 05, 2018 (Nintendo Switch), Jun 05, 2018 (Xbox One)

YOU are a psychiatrist, trying to solve a murder whilst treating the unusual patients of the recently deceased Doctor Dekker. Type a question - patients reply in full screen video and have questions for you too but be careful what you say. Your words determine their eventual fates, and your own!

The Infectious Madness of Doctor Dekker is an Adventure, Casual, Indie, Simulation game released in 2017, priced at $8.99, with an estimated 50,000 .. 100,000 owners and a Very Positive review sentiment (82% of 618 reviews).

2
playing now
82%
positive of 618 reviews
Very Positive
steam's rating (official)
50,000–100,000
owners (SteamSpy est.)
80/100
critic score (1 outlets, IGDB)
65/100
IGDB user rating (8 ratings)
4.04★
PlayStation Store rating (398 ratings)
bronze
deck/linux tier (ProtonDB)
Playable
Steam Deck (Valve)
SteamOS: Playable
$8.99
steam price (US)

2 players in-game as of 2026-10-14 18:00 UTC (census sample)

The Infectious Madness of Doctor Dekker is an FMV murder mystery adventure video game developed by D'avekki Studios, written by Tim Cowles and Lynda Cowles, and released in 2017. Players play as a psychiatrist, trying to solve a murder whilst treating the patients of the recently deceased Doctor Dekker. The game was initially released for Microsoft Windows and macOS via Steam before being published on consoles by British game publishing studio, Wales Interactive.

Health check

Quietly active
  • · 2 players in-game at the last census sample.
  • · 25 reviews in the last 8 weeks (~3/week).
  • · Review velocity down 19% vs the prior 8 weeks.
  • · Top 17% of 28,739 Adventure games in the census by review count.

Health tier since 2026-08-31

Estimated sales: 15k–37k copies

Review-multiple estimate from 618 total reviews — how this is computed.

Current store prices

GOG$2.69-70%
Microsoft Store$12.99

Deal snapshots via CheapShark, refreshed daily.

All-time low: $2.06 at Fanatical (2025-06-20) · bundled 5×via IsThereAnyDeal

12-month high $8.99 · on sale 83 of 105 observed days · $0.63 above the all-time low (census price snapshots)

Review momentum

PositiveNegative
121220172026Week of 2017-12-01: 5 positiveWeek of 2018-01-01: 2 positiveWeek of 2018-01-01: 2 negativeWeek of 2018-02-01: 3 positiveWeek of 2018-02-01: 2 negativeWeek of 2018-03-01: 5 positiveWeek of 2018-03-01: 2 negativeWeek of 2018-04-01: 3 positiveWeek of 2018-05-01: 1 positiveWeek of 2018-06-01: 6 positiveWeek of 2018-06-01: 1 negativeWeek of 2018-07-01: 6 positiveWeek of 2018-07-01: 2 negativeWeek of 2018-08-01: 2 positiveWeek of 2018-08-01: 1 negativeWeek of 2018-09-01: 1 positiveWeek of 2018-09-01: 1 negativeWeek of 2018-10-01: 1 positiveWeek of 2018-11-01: 5 positiveWeek of 2018-11-01: 2 negativeWeek of 2018-12-01: 8 positiveWeek of 2019-01-01: 7 positiveWeek of 2019-01-01: 1 negativeWeek of 2019-02-01: 6 positiveWeek of 2019-03-01: 3 positiveWeek of 2019-03-01: 1 negativeWeek of 2019-04-01: 4 positiveWeek of 2019-06-01: 10 positiveWeek of 2019-06-01: 2 negativeWeek of 2019-07-01: 9 positiveWeek of 2019-07-01: 1 negativeWeek of 2019-08-01: 1 positiveWeek of 2019-09-01: 5 positiveWeek of 2019-09-01: 1 negativeWeek of 2019-10-01: 2 positiveWeek of 2019-11-01: 9 positiveWeek of 2019-12-01: 9 positiveWeek of 2019-12-01: 1 negativeWeek of 2020-01-01: 1 positiveWeek of 2020-01-01: 1 negativeWeek of 2020-02-01: 4 positiveWeek of 2020-03-01: 3 positiveWeek of 2020-03-01: 1 negativeWeek of 2020-04-01: 6 positiveWeek of 2020-04-01: 2 negativeWeek of 2020-05-01: 8 positiveWeek of 2020-06-01: 8 positiveWeek of 2020-07-01: 9 positiveWeek of 2020-08-01: 5 positiveWeek of 2020-09-01: 5 positiveWeek of 2020-09-01: 1 negativeWeek of 2020-10-01: 4 positiveWeek of 2020-10-01: 1 negativeWeek of 2020-11-01: 5 positiveWeek of 2020-11-01: 1 negativeWeek of 2020-12-01: 5 positiveWeek of 2021-01-01: 10 positiveWeek of 2021-01-01: 1 negativeWeek of 2021-02-01: 6 positiveWeek of 2021-03-01: 4 positiveWeek of 2021-03-01: 1 negativeWeek of 2021-04-01: 4 positiveWeek of 2021-04-01: 1 negativeWeek of 2021-05-01: 12 positiveWeek of 2021-05-01: 1 negativeWeek of 2021-06-01: 2 positiveWeek of 2021-08-01: 1 positiveWeek of 2021-08-01: 1 negativeWeek of 2021-09-01: 1 positiveWeek of 2021-10-01: 1 positiveWeek of 2021-11-01: 6 positiveWeek of 2021-12-01: 1 positiveWeek of 2022-01-01: 3 positiveWeek of 2022-02-01: 5 positiveWeek of 2022-02-01: 1 negativeWeek of 2022-03-01: 1 positiveWeek of 2022-04-01: 1 positiveWeek of 2022-05-01: 2 positiveWeek of 2022-05-01: 3 negativeWeek of 2022-06-01: 3 positiveWeek of 2022-07-01: 2 positiveWeek of 2022-07-01: 3 negativeWeek of 2022-08-01: 4 positiveWeek of 2022-08-01: 1 negativeWeek of 2022-09-01: 4 positiveWeek of 2022-10-01: 1 positiveWeek of 2022-11-01: 3 positiveWeek of 2022-12-01: 2 positiveWeek of 2022-12-01: 2 negativeWeek of 2023-01-01: 2 positiveWeek of 2023-02-01: 1 positiveWeek of 2023-03-01: 3 positiveWeek of 2023-03-01: 1 negativeWeek of 2023-04-01: 1 negativeWeek of 2023-05-01: 1 positiveWeek of 2023-05-01: 1 negativeWeek of 2023-06-01: 1 positiveWeek of 2023-07-01: 3 positiveWeek of 2023-07-01: 1 negativeWeek of 2023-08-01: 2 negativeWeek of 2023-09-01: 2 positiveWeek of 2023-10-01: 1 negativeWeek of 2023-11-01: 1 positiveWeek of 2023-11-01: 2 negativeWeek of 2023-12-01: 2 positiveWeek of 2024-01-01: 3 positiveWeek of 2024-01-01: 2 negativeWeek of 2024-02-01: 1 positiveWeek of 2024-02-01: 1 negativeWeek of 2024-03-01: 1 positiveWeek of 2024-03-01: 1 negativeWeek of 2024-04-01: 1 positiveWeek of 2024-04-01: 1 negativeWeek of 2024-05-01: 1 positiveWeek of 2024-05-01: 1 negativeWeek of 2024-06-01: 1 positiveWeek of 2024-07-01: 5 positiveWeek of 2024-08-01: 3 positiveWeek of 2024-09-01: 2 positiveWeek of 2024-09-01: 1 negativeWeek of 2024-10-01: 3 positiveWeek of 2024-11-01: 2 positiveWeek of 2024-11-01: 1 negativeWeek of 2024-12-01: 1 positiveWeek of 2025-01-01: 2 positiveWeek of 2025-01-01: 2 negativeWeek of 2025-02-01: 2 negativeWeek of 2025-03-01: 1 positiveWeek of 2025-03-01: 1 negativeWeek of 2025-04-01: 7 positiveWeek of 2025-04-01: 1 negativeWeek of 2025-05-01: 1 negativeWeek of 2025-06-01: 3 positiveWeek of 2025-06-01: 2 negativeWeek of 2025-07-01: 4 positiveWeek of 2025-08-01: 2 positiveWeek of 2025-09-01: 3 positiveWeek of 2025-10-01: 5 positiveWeek of 2025-11-01: 3 positiveWeek of 2025-12-01: 5 positiveWeek of 2026-01-01: 1 positiveWeek of 2026-02-01: 2 positiveWeek of 2026-03-01: 1 positiveWeek of 2026-04-01: 1 positiveWeek of 2026-05-01: 2 positiveWeek of 2026-05-01: 3 negativeWeek of 2026-06-01: 6 positiveWeek of 2026-06-01: 1 negativeWeek of 2026-07-01: 3 positiveWeek of 2026-08-01: 2 positiveWeek of 2026-08-01: 1 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

402026-09-15 03:00 — 3 players2026-09-16 11:00 — 0 players2026-09-17 19:00 — 1 players2026-09-19 02:00 — 1 players2026-09-20 10:00 — 1 players2026-09-21 18:00 — 2 players2026-09-23 01:00 — 1 players2026-09-24 09:00 — 1 players2026-09-25 16:00 — 1 players2026-09-27 00:00 — 4 players2026-09-28 07:00 — 0 players2026-09-29 15:00 — 0 players2026-09-30 22:00 — 1 players2026-10-02 06:00 — 0 players2026-10-03 13:00 — 2 players2026-10-04 21:00 — 2 players2026-10-06 05:00 — 0 players2026-10-07 12:00 — 0 players2026-10-08 20:00 — 2 players2026-10-10 03:00 — 2 players2026-10-11 11:00 — 2 players2026-10-12 19:00 — 0 players2026-10-14 02:00 — 0 players2026-10-14 18:00 — 2 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$8.99$2.242017-05-192026-10-142017-05-19 — best price $8.992018-11-27 — best price $8.992020-01-22 — best price $4.492020-08-04 — best price $8.992020-09-06 — best price $8.992020-10-01 — best price $7.992020-10-24 — best price $8.992020-11-13 — best price $7.992020-12-22 — best price $5.392021-01-23 — best price $8.992021-02-14 — best price $8.992021-03-24 — best price $6.602021-04-25 — best price $7.532021-05-29 — best price $8.992021-07-01 — best price $7.532021-12-02 — best price $8.992022-05-07 — best price $8.992022-07-13 — best price $7.092022-11-08 — best price $7.092023-02-25 — best price $7.092023-09-25 — best price $2.692024-01-07 — best price $6.602024-03-13 — best price $8.992024-06-11 — best price $7.092024-08-23 — best price $7.092024-11-19 — best price $3.052025-01-20 — best price $2.692025-03-12 — best price $8.992025-05-10 — best price $6.602025-07-18 — best price $8.992025-10-08 — best price $8.992025-12-12 — best price $2.702026-03-16 — best price $8.992026-05-22 — best price $8.992026-08-29 — best price $2.692026-09-13 — best price $2.692026-09-28 — best price $2.692026-10-13 — best price $2.692026-10-14 — best price $2.69
Lowest recorded price across tracked stores, per day (census snapshots).

Attention

2452026-05-29 — 13 pageviews2026-06-02 — 18 pageviews2026-06-06 — 8 pageviews2026-06-10 — 9 pageviews2026-06-14 — 10 pageviews2026-06-18 — 17 pageviews2026-06-22 — 19 pageviews2026-06-26 — 10 pageviews2026-06-30 — 23 pageviews2026-07-04 — 13 pageviews2026-07-08 — 8 pageviews2026-07-12 — 6 pageviews2026-07-16 — 21 pageviews2026-07-20 — 17 pageviews2026-07-24 — 13 pageviews2026-07-28 — 5 pageviews2026-08-01 — 10 pageviews2026-08-05 — 15 pageviews2026-08-09 — 14 pageviews2026-08-13 — 13 pageviews2026-08-17 — 12 pageviews2026-08-21 — 24 pageviews2026-08-25 — 12 pageviews2026-08-29 — 9 pageviews2026-09-02 — 14 pageviews2026-09-06 — 13 pageviews2026-09-10 — 9 pageviews2026-09-14 — 17 pageviews2026-09-18 — 12 pageviews2026-09-22 — 10 pageviews2026-09-26 — 11 pageviews2026-09-30 — 8 pageviews2026-10-04 — 10 pageviews2026-10-08 — 11 pageviews
Daily Wikipedia pageviews (attention proxy, census-recorded).

Completion

35
achievements tracked
85.8%
earned "Intern"
14.8%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsmacOSLinuxSingle-playerSteam AchievementsSteam Trading CardsFamily Sharing

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
PS4 (PlayStation)1,57642%22
Steam (Steam)1,2885%35
Xbox One (Xbox)95223%21
Switch (Nintendo)70%0

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Player tags

FMVDarkIndieHorrorMysteryAdventureDetectiveSimulationStory RichAtmospheric

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

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Similarity via IGDB.

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