The Posthumous Investigation
A dead man hired you to solve his own murder. You have one day. Fourteen suspects. And as many attempts as it takes. A hand-drawn noir mystery set in 1937 Rio de Janeiro, where every suspect has a life, a schedule, and something to hide.
- Price:$19.99
- Release Date:3/31/2026
- Franchise:Infini Fun
- Developer:Mother Gaia Studio
- Publishers:
- Last Updated:6/21/2026
- Steam App Id:2466900
The Posthumous Investigation
- Windows
- Mac
- Linux
- Steam Deck (Playable)
Steam Charts, Stats, and Live Player Count
At the moment, The Posthumous Investigation has 13 concurrent players online and in-game. This is 95% lower than its previous all-time peak of 260 players achieved on 4/5/2026.
Review History Chart
Track historical review trends and overall ratings for The Posthumous Investigation. It has received a total of 583 reviews on the Steam store and achieved a Player Score of 88 (Very Positive).
Price History Chart
Track historical price changes and trends for The Posthumous Investigation. Right now, it costs $19.99 in the Steam Store.
Community Hub Members & Followers Chart
Explore the cumulative breakdown of Steam community hub members for The Posthumous Investigation and its growth over time. It currently has 996 followers on its community page.
About The Posthumous Investigation
The Posthumous Investigation is a Simulation, Adventure, Indie, and Casual game developed by Mother Gaia Studio. On 3/31/2026, it was released on the Steam Store by Nuuvem, Infini Fun, Nuuvem Inc, CriticalLeap, and Mother Gaia Studio.
Players have rated The Posthumous Investigation as "Very Positive" out of 583 total reviews on the Steam Store. These are split between 553 positive reviews and 30 negative reviews — an overall 95% positive review rating.
It is available for gamers to download and play for $19.99. It can also be purchased through Books & Mysteries, The Posthumous Investigation of the Golden Idol, and Cross-Border Investigation which give a discount off its base price.
It can be played and ran on both Windows and Mac systems. At the moment, it is possible to play The Posthumous Investigation on the Steam Deck but some functionaliy may not be fully supported.
It also supports 6 languanges in-game including English, Portuguese-Brazil, Japanese, Russian, and Chinese (Simplified). Each language comes with varying levels of support for the in-game interface, audio, and fully translated subtitles.
According to Steam’s category system, The Posthumous Investigation supports the following features:
- Single-player
- Full controller support
- Steam Achievements
- Family Sharing
- Steam Cloud
From the Steam community, The Posthumous Investigation has been tagged with the following user tags:
- Adventure
- Singleplayer
- 2D
- Exploration
- Drama
- Supernatural
- Atmospheric
- Investigation
- Multiple Endings
- Time Manipulation
- Story Rich
- Dialogue Heavy
- Visual Novel
- Historical
- Stylized
- Puzzle
- Choices Matter
- Comedy
- Hand-drawn
- Noir
- Conversation
- Logic
- Mystery
- Time Travel
- Crime
- Detective
- Funny
- Point & Click
Media & Sceenshots
Watch the featured video for The Posthumous Investigation and see the latest screenshots from the Steam Store.
Related Bundles
The Posthumous Investigation is included in 3 bundles in the Steam Store.
| Image | Name | Apps | Packages | Price | Actions |
|---|---|---|---|---|---|
 | Books & Mysteries | 2 | 2 | $21.58 | View |
 | The Posthumous Investigation of the Golden Idol | 2 | 2 | $31.48 | View |
 | Cross-Border Investigation | 2 | 2 | $23.38 | View |
Related Packages
The Posthumous Investigation is referenced by 1 package in the Steam Store.
| Name | Price | Actions |
|---|---|---|
| The Posthumous Investigation | $17.99 | View |
Supported Languages
The Posthumous Investigation is available in 6 different languages with varying levels of support for the in-game interface, audio, and fully translated subtitles.
| Name | Interface | Audio | Subtitles |
|---|---|---|---|
| English | Yes | No | Yes |
| Portuguese-Brazil | Yes | No | Yes |
| Japanese | Yes | No | Yes |
| Russian | Yes | No | Yes |
| Chinese (Simplified) | Yes | No | Yes |
| Chinese (Traditional) | Yes | No | Yes |
Frequently Asked Questions
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in realtime to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.
The Posthumous Investigation data has been sourced from:
- Valve Corporation. (2026, June 21). The Posthumous Investigation on Steam. Steam Store. https://store.steampowered.com/app/2466900
- Valve Corporation. (2026, June 21). The Posthumous Investigation. Steam Community Hub. https://steamcommunity.com/app/2466900
- Mother Gaia Studio. (2023, July 7). The Posthumous Investigation. The Posthumous Investigation. https://mothergaia.com.br/the-posthumous-investigation/