Loading
- PLATFORM
- Steam
- GENRE
- Adventure · Casual · Indie
- RELEASED
- 2026
- DRM
- Steam
- STUDIO
- Mother Gaia Studio
Buy The Posthumous Investigation Steam key
Mother Gaia Studio95% positive · 678 reviews
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.
BEST PRICE TODAY
$8.83
at Kinguin · Steam key · -56% off RRP
Go to Kinguin →Compare prices in official stores
Licences issued directly by the publisher or an authorised retailer. These cannot be revoked.
| Store | Edition | Price | Go to store |
|---|---|---|---|
 Green Man GamingOFFICIALMATCHED BY STEAM APP ID | Standard | $13.93 | Buy The Posthumous Investigation at Green Man Gaming |
 SteamOFFICIALDIRECT STEAM LISTING | Standard | CHEAPEST $19.99 | Buy The Posthumous Investigation at Steam |
2 OFFICIAL PRICESISSUED BY THE PUBLISHER OR AN AUTHORISED RETAILER
Compare prices in keyshops
Third-party sellers reselling keys on a marketplace. Usually cheaper — read the key type and activation region before the price, then confirm the seller terms on the store page. Right now the cheapest keyshop listing saves $11.16 against the best official price.
| Shop / seller | Edition / key type | Price | Go to store |
|---|---|---|---|
 KinguinMATCHED BY STEAM APP ID Global | Steam key | CHEAPEST $8.83 | Buy The Posthumous Investigation at Kinguin |
1 KEYSHOP LISTINGSPRICES AS LISTED BY THE MARKETPLACE
About The Posthumous Investigation
The Posthumous Investigation was developed by Mother Gaia Studio and published by CriticalLeap, Infini Fun. The release date was March 31, 2026. The genre is characterised as Adventure and Casual and Indie. The Posthumous Investigation features discussions about murder, death, mental and physical illness and incorrect forms of treatment. Some characters drink and smoke. It's not graphic, but not recommended to children nonetheless.
Master the Time Loop: You have one day to solve the crime. Learn the schedules of 14 unique characters, spot their contradictions, and manipulate their routines. Keep your knowledge when the day resets and stay one step ahead of the killer. No hand-holding. Use your "Thinking Board" to link evidence, reconstruct the timeline, and accuse the culprit. Only pure logic will free you from the loop. A Living Literary World: Experience a satirical, witty, and dark adaptation of Brazil’s legendary author, Machado de Assis. Your investigation takes you through a hand-drawn 1937 Rio de Janeiro that drips with style, sarcasm, and atmosphere. There is no single correct answer: every accusation has its logic, and the truth is yours to define.
The Posthumous Investigation compatibility
- Steam Deck
- Unknown
- Linux
- Not supported
- macOS
- Native build
MINIMUM
Minimum: • Requires a 64-bit processor and operating system • OS: Windows 10 • Processor: Multi-core 1.8GHz or faster • Memory: 4 GB RAM • Graphics: NVIDIA GeForce GTX 760 or equivalent • Storage: 3 GB available space
RECOMMENDED
Recommended: • Requires a 64-bit processor and operating system • OS: Windows 10 • Processor: Multi-core 2.5GHz or faster • Memory: 8 GB RAM • Graphics: NVIDIA GeForce GTX 1050 or equivalent • Storage: 3 GB available space
Where to buy The Posthumous Investigation cheap
The Posthumous Investigation launched at $19.99 in 2026. The cheapest currently listed total is $8.83 at Kinguin, which is -56% off the recommended price.
Official stores start at $19.99, so the keyshop route saves $11.16 on this title. That saving comes with a trade-off: keyshop listings are resold keys, and a listing marked as a gift is not a standard key. The key type column above tells you which is which.
Feed update times differ by store. Confirm the current price, product type and activation region on the store page before completing the purchase. Our comparison methodology explains matching, ranking and checkout-fee limitations.
The Posthumous Investigation — frequently asked questions
- What is the cheapest price for The Posthumous Investigation?
- $8.83 at Kinguin — -56% off the $19.99 RRP.
- Where can I download The Posthumous Investigation after the purchase?
- The Posthumous Investigation activates on Steam. After buying you receive a key or a direct licence, redeem it in the Steam client, and the game stays in your library permanently.
- Is it cheaper to buy The Posthumous Investigation from a keyshop or an official store?
- A keyshop is currently $11.16 cheaper: $8.83 at Kinguin against $19.99 at Steam. The keyshop listing is a resold key, so check the key type and region first.
- Is The Posthumous Investigation Steam Deck compatible?
- Steam Deck compatibility data is not available for The Posthumous Investigation yet.
- Can I play The Posthumous Investigation on Mac?
- Yes, The Posthumous Investigation has a native macOS build.
- Is The Posthumous Investigation Linux compatible?
- The Posthumous Investigation has no verified Linux support. Proton results vary and are not guaranteed.
