STEAMDB NEXUS

Steam app 50980 · updated 13 Sep 2026, 04:25 UTC

Mystery Case Files: Prime Suspects™

The Queen's Hope Diamond has been stolen! It's up to you to search for clues throughout 22 levels, find the offending culprit, and recover the stolen gem. Expand your investigations through the game's 29 unique locations by finding items that will unlock subsequent levels.

Mystery Case Files: Prime Suspects™ Steam header artwork
Big Fish GamesBFG Entertainment
1playing now
424-hour peak
15all-time peak
2average, last 30 days

The last 30 days

−0.3Gain−9.66%% gain10Peak

227 hourly samples, with the daily peak drawn over them. Weekends are shaded.

03581114 Aug18 Aug22 Aug26 Aug30 Aug06 Sep10 SepFriday 14 August 20264 peakSaturday 15 August 202610 peakSunday 16 August 20266 peakMonday 17 August 20266 peakTuesday 18 August 20264 peakWednesday 19 August 20266 peakThursday 20 August 20266 peakFriday 21 August 20265 peakSaturday 22 August 20264 peakSunday 23 August 20267 peakMonday 24 August 20264 peakTuesday 25 August 20265 peakWednesday 26 August 20265 peakThursday 27 August 20263 peakFriday 28 August 20264 peakSaturday 29 August 20266 peakSunday 30 August 20267 peakMonday 31 August 20265 peakTuesday 01 September 20266 peakWednesday 02 September 20263 peakSunday 06 September 20264 peakMonday 07 September 20263 peakTuesday 08 September 20263 peakWednesday 09 September 20264 peakThursday 10 September 20264 peakFriday 11 September 20264 peakSaturday 12 September 20264 peakSunday 13 September 20261 peak
Daily peakEvery hourly sample

All time

171 months, July 2012 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.

04812162012201420172019202120242026July 20125 monthly peakAugust 20124 monthly peakSeptember 20123 monthly peakOctober 20123 monthly peakNovember 20123 monthly peakDecember 20123 monthly peakJanuary 20133 monthly peakFebruary 20133 monthly peakMarch 20133 monthly peakApril 20133 monthly peakMay 20134 monthly peakJune 20133 monthly peakJuly 20133 monthly peakAugust 20132 monthly peakSeptember 20133 monthly peakOctober 20132 monthly peakNovember 20132 monthly peakDecember 20133 monthly peakJanuary 20143 monthly peakFebruary 20143 monthly peakMarch 20142 monthly peakApril 20142 monthly peakMay 20142 monthly peakJune 20142 monthly peakJuly 20142 monthly peakAugust 20144 monthly peakSeptember 20142 monthly peakOctober 20142 monthly peakNovember 20142 monthly peakDecember 20141 monthly peakJanuary 20153 monthly peakFebruary 20152 monthly peakMarch 20151 monthly peakApril 20152 monthly peakMay 20152 monthly peakJune 20151 monthly peakJuly 20152 monthly peakAugust 20153 monthly peakSeptember 20151 monthly peakOctober 20152 monthly peakNovember 20153 monthly peakDecember 20152 monthly peakJanuary 20162 monthly peakFebruary 20162 monthly peakMarch 20162 monthly peakApril 20162 monthly peakMay 20162 monthly peakJune 20162 monthly peakJuly 20163 monthly peakAugust 20163 monthly peakSeptember 20163 monthly peakOctober 20162 monthly peakNovember 20164 monthly peakDecember 20166 monthly peakJanuary 20178 monthly peakFebruary 20174 monthly peakMarch 20173 monthly peakApril 20174 monthly peakMay 20173 monthly peakJune 20174 monthly peakJuly 20175 monthly peakAugust 20173 monthly peakSeptember 20174 monthly peakOctober 20174 monthly peakNovember 20175 monthly peakDecember 20178 monthly peakJanuary 20185 monthly peakFebruary 20184 monthly peakMarch 20184 monthly peakApril 20184 monthly peakMay 20183 monthly peakJune 20185 monthly peakJuly 20186 monthly peakAugust 20183 monthly peakSeptember 20182 monthly peakOctober 20184 monthly peakNovember 20185 monthly peakDecember 20186 monthly peakJanuary 20196 monthly peakFebruary 20195 monthly peakMarch 20195 monthly peakApril 20194 monthly peakMay 20194 monthly peakJune 20194 monthly peakJuly 20194 monthly peakAugust 20194 monthly peakSeptember 20194 monthly peakOctober 20194 monthly peakNovember 20195 monthly peakDecember 20198 monthly peakJanuary 20207 monthly peakFebruary 20206 monthly peakMarch 20206 monthly peakApril 20208 monthly peakMay 20206 monthly peakJune 20207 monthly peakJuly 20208 monthly peakAugust 20206 monthly peakSeptember 20207 monthly peakOctober 20205 monthly peakNovember 20206 monthly peakDecember 20209 monthly peakJanuary 20219 monthly peakFebruary 20216 monthly peakMarch 20217 monthly peakApril 20217 monthly peakMay 20217 monthly peakJune 20216 monthly peakJuly 20217 monthly peakAugust 20216 monthly peakSeptember 20216 monthly peakOctober 20216 monthly peakNovember 20217 monthly peakDecember 20219 monthly peakJanuary 20228 monthly peakFebruary 20227 monthly peakMarch 20227 monthly peakApril 20226 monthly peakMay 20226 monthly peakJune 20227 monthly peakJuly 202211 monthly peakAugust 20226 monthly peakSeptember 20226 monthly peakOctober 20225 monthly peakNovember 20226 monthly peakDecember 202210 monthly peakJanuary 20238 monthly peakFebruary 20238 monthly peakMarch 20239 monthly peakApril 20239 monthly peakMay 20237 monthly peakJune 20239 monthly peakJuly 20239 monthly peakAugust 20238 monthly peakSeptember 20237 monthly peakOctober 20237 monthly peakNovember 20237 monthly peakDecember 202310 monthly peakJanuary 20248 monthly peakFebruary 20248 monthly peakMarch 20246 monthly peakApril 20248 monthly peakMay 20246 monthly peakJune 20248 monthly peakJuly 202411 monthly peakAugust 20248 monthly peakSeptember 20248 monthly peakOctober 202410 monthly peakNovember 20249 monthly peakDecember 202415 monthly peakJanuary 202511 monthly peakFebruary 20259 monthly peakMarch 202510 monthly peakApril 20259 monthly peakMay 20257 monthly peakJune 20257 monthly peakJuly 20258 monthly peakAugust 20259 monthly peakSeptember 20257 monthly peakOctober 20256 monthly peakNovember 20257 monthly peakDecember 202513 monthly peakJanuary 202612 monthly peakFebruary 20267 monthly peakMarch 20268 monthly peakApril 202615 monthly peakMay 202612 monthly peakJune 202611 monthly peakJuly 202611 monthly peakAugust 202610 monthly peakSeptember 20266 monthly peak
Monthly peak

The last four months

Show:

The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.

036912July 2026August 2026September 2026October 2026July 202611 peak — daily detail belowAugust 202610 peak — hourly detail belowSeptember 20266 peak — daily detail below
Monthly peakHas finer data

July 2026

31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

03691201 Jul06 Jul11 Jul16 Jul21 Jul26 Jul31 JulWednesday 01 July 20266 peakThursday 02 July 20268 peakFriday 03 July 20268 peakSaturday 04 July 20269 peakSunday 05 July 202611 peakMonday 06 July 20267 peakTuesday 07 July 20267 peakWednesday 08 July 20267 peakThursday 09 July 202610 peakFriday 10 July 20267 peakSaturday 11 July 20269 peakSunday 12 July 20269 peakMonday 13 July 20267 peakTuesday 14 July 20268 peakWednesday 15 July 202610 peakThursday 16 July 20265 peakFriday 17 July 20267 peakSaturday 18 July 20267 peakSunday 19 July 20268 peakMonday 20 July 20267 peakTuesday 21 July 20265 peakWednesday 22 July 20265 peakThursday 23 July 20265 peakFriday 24 July 20264 peakSaturday 25 July 20269 peakSunday 26 July 20268 peakMonday 27 July 20266 peakTuesday 28 July 20266 peakWednesday 29 July 20263 peakThursday 30 July 20262 peakFriday 31 July 20266 peak

August 2026

31 days as the curve, each the highest figure that day. Behind it, 163 hourly samples from 14 Aug, which is as far back as the source keeps every hour. Weekends are shaded.

03581101 Aug06 Aug11 Aug16 Aug21 Aug26 Aug31 AugSaturday 01 August 20262 peakSunday 02 August 20263 peakMonday 03 August 20264 peakTuesday 04 August 20267 peakWednesday 05 August 20266 peakThursday 06 August 20265 peakFriday 07 August 20266 peakSaturday 08 August 20265 peakSunday 09 August 20266 peakMonday 10 August 20265 peakTuesday 11 August 20265 peakWednesday 12 August 20266 peakThursday 13 August 20265 peakFriday 14 August 20266 peakSaturday 15 August 202610 peakSunday 16 August 20266 peakMonday 17 August 20266 peakTuesday 18 August 20264 peakWednesday 19 August 20266 peakThursday 20 August 20266 peakFriday 21 August 20265 peakSaturday 22 August 20264 peakSunday 23 August 20267 peakMonday 24 August 20264 peakTuesday 25 August 20265 peakWednesday 26 August 20265 peakThursday 27 August 20263 peakFriday 28 August 20264 peakSaturday 29 August 20266 peakSunday 30 August 20267 peakMonday 31 August 20265 peak

September 2026

11 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

0235601 Sep02 Sep03 Sep06 Sep07 Sep08 Sep09 Sep10 Sep11 Sep12 Sep13 SepTuesday 01 September 20266 peakWednesday 02 September 20263 peakThursday 03 September 20260 peakSunday 06 September 20264 peakMonday 07 September 20263 peakTuesday 08 September 20263 peakWednesday 09 September 20264 peakThursday 10 September 20264 peakFriday 11 September 20264 peakSaturday 12 September 20264 peakSunday 13 September 20261 peak

October 2026

Mystery Case Files: Prime Suspects™ was released on Apr 21, 2010.

Not out yet.There is nothing to draw for this month.
Nothing here is interpolated or estimated; where a sample is missing the line is broken.

Game information

Updated 13 Sep 2026, 04:25 UTC
App ID
50980
Developer
Big Fish Games
Publisher
BFG Entertainment
Release date
Apr 21, 2010
Platforms
Windows
Install size
49 MB
Genres
Casual
Game modes
Single-player
Controller support
Unknown

Features & support

Steam features

Family Sharing

Controllers & input

Accessibility

Popular tags

CasualHidden Object
About this gameFull description from Steam
The Queen's Hope Diamond has been stolen! It's up to you to search for clues throughout 22 levels, find the offending culprit, and recover the stolen gem. Expand your investigations through the game's 29 unique locations by finding items that will unlock subsequent levels. Thousands of clues are cleverly hidden within the beautiful illustrations, creating a new game experience each time you step into this masterpiece of visual indulgences! 22 ever-changing levels. 29 unique locations to explore. Constantly-transforming items and clues.
System requirementsMinimum and recommended hardware

Minimum

OS *: Windows 2000/XP/Vista Processor: 600 Mhz or better Memory: 128 MB RAM DirectX®: 6.0 Hard Drive: 54 MB of free space

Recommended

Supported languages1 languages
LanguageFull audio
English

A blank audio cell means full audio was not marked in the returned language list.

Screenshots & trailersScreenshots and trailers
Mystery Case Files: Prime Suspects™ screenshot 1Mystery Case Files: Prime Suspects™ screenshot 2Mystery Case Files: Prime Suspects™ screenshot 3
AchievementsTotal count and selected achievements

4 developer announcements, Sep 2016 to Nov 2016 · times in UTC

November

  1. A dance that never dies...

    http://cdn.akamai.steamstatic.com/steamcommunity/public/images/clans/26741404/06f7ba5041f782b99fd37424aeb180bbd67c368b.png Your sister's invited you to attend the biggest performance of her life: she'll debut as Donatella di Fiore, every…

    BFG_Skipper
  2. A dance that never dies...

    http://cdn.akamai.steamstatic.com/steamcommunity/public/images/clans/26741404/06f7ba5041f782b99fd37424aeb180bbd67c368b.png Your sister's invited you to attend the biggest performance of her life: she'll debut as Donatella di Fiore, every…

    BFG_Skipper

September

  1. 50% Off Labor Day Weekend Bundle Sale!

    Enjoy Labor Day weekend by playing Mystery Case Files and Dark Parables! Mystery Case Files Series Bundle - 50% Off http://cdn.akamai.steamstatic.com/steamcommunity/public/images/clans/3959598/ba34cee5812092a2e25ce17700311c1d4ef164df.png…

    BigFishGames
  2. 50% Off Labor Day Weekend Bundle Sale!

    Enjoy Labor Day weekend by playing Mystery Case Files and Dark Parables! Mystery Case Files Series Bundle - 50% Off http://cdn.akamai.steamstatic.com/steamcommunity/public/images/clans/3959598/ba34cee5812092a2e25ce17700311c1d4ef164df.png…

    BigFishGames

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