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Be the first to review Mystery Case Files: Prime Suspects
Following on the heels of Mystery Case Files: Huntsville, the player is tasked with investigating the disappearance of the Queen’s Hope Diamond in Capital City. The 800 carats (160 g) diamond was stolen from the Capital City Plaza Gallery where it was on display as part of the annual mineral convention, Sparkle Daze. Prime Suspects adds items that players have to discover to unlock later levels (such as finding a battery to power a flashlight). Characters also became a more prominent part of the series with the investigation revolving around a list of 20 characters with different personality ‘quirks’.
Game modes: Single player
Right now the lowest price for Mystery Case Files: Prime Suspects we're tracking is $4.16 at Kinguin — 58% below Steam's $9.99. We compare 2 stores and prices refresh every few minutes.
The lowest price we've recorded for Mystery Case Files: Prime Suspects is $2.99 at Steam on July 6, 2026. The current best price is about 39% above that low.
87% of 94 Steam user reviews for Mystery Case Files: Prime Suspects are positive ("Very Positive").
Mystery Case Files: Prime Suspects released on April 5, 2006, developed by Big Fish Studios and published by Big Fish Studios.
Mystery Case Files: Prime Suspects is available on Linux, PC (Microsoft Windows), Mac, Nintendo DS. It supports single player.
Mystery Case Files: Prime Suspects last hit a new low of $2.99 on July 6, 2026 at Steam. Current best price is $4.16. Prices on this page refresh every few minutes, so check back around seasonal sales for new lows.
The cheapest Mystery Case Files: Prime Suspects price right now is $4.16 at Kinguin, 58% below the Steam price.
| Store | Discount | Price | Buy link |
|---|---|---|---|
 KinguinBest price | — | $4.16 | Buy Mystery Case Files: Prime Suspects at Kinguin |
 Steam | — | $9.99 | Buy Mystery Case Files: Prime Suspects at Steam |
All-time low: $2.99 at Steam on Jul 6, 2026 — the current best price is 39% above it.
Prices in USD, refreshed every few minutes. Switch currency on this page for EUR/GBP/BRL and more.