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.
Last Updated: 5/2/2026
| Steam Price | $19.99 |
| Release Date | 3/31/2026 |
| Franchise | Infini Fun |
| Developer | Mother Gaia Studio |
| Publishers | |
| Steam App Id | 2466900 |
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.
Last Updated: 5/2/2026
- Windows
- Mac
- Linux
- Steam Deck (Playable)
About The Posthumous Investigation
The Posthumous Investigation is an Indie, Simulation, Casual, and Adventure 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.
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 functionality 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:
- Steam Achievements
- Full controller support
- Family Sharing
- Single-player
- 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
- Visual Novel
- Historical
- Stylized
- Puzzle
- Choices Matter
- Comedy
- Hand-drawn
- Noir
- Conversation
- Logic
- Mystery
- 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 1 bundle in the Steam Store. Purchasing through a bundle can give a large discount off the game's base price if you are willing to purchase multiple apps all at once.
| Image | Name | Apps | Packages | Price | Actions |
|---|---|---|---|---|---|
 | The Posthumous Investigation of the Golden Idol | 2 | 2 | $34.18 | View |
Related Packages
The Posthumous Investigation is referenced by 1 package in the Steam Store. A package (or sub) is simply an item that can be purchased on Steam.
| Name | Price | Actions |
|---|---|---|
| The Posthumous Investigation | $17.99 | View |
Supported Languages and Localizations
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 |
Discover Similar Games
Find a new game to play just like The Posthumous Investigation through our curated lists. Steambase uses Steam's User Tag and Genre system (and other game stats) to curate a list of the best and most loved games similar to The Posthumous Investigation.
Genres
Features & Categories
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 real-time 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, May 2). The Posthumous Investigation on Steam. Steam Store.
- Valve Corporation. (2026, May 2). The Posthumous Investigation. Steam Community Hub.
- Mother Gaia Studio. (2023, July 7). The Posthumous Investigation. The Posthumous Investigation.