Screenshots
Watch trailer on Steam ↗Grégoire Lefèbvre Investigations : The Vow of Hate
Tcherry · Published by Viridis Cosmos Games · Official site ↗
Last updated 28 Sept 2026
Play as Captain Grégoire Lefèbvre and investigate the murder of a controversial country priest in this gripping historical detective thriller.
Adventure, Indie · 2027 · More free games
Embark on a historical adventure as Captain Grégoire Lefèbvre investigates the mysterious murder of a country priest. Delve into the complex world of Tcherry's indie detective game, released in 2027.
About this game
1799. In the France (Belgium) of the Directory, Captain Lefèbvre investigates the murder of the local priest. To solve the mystery, Lefèbvre must explore various locations, gather clues, and question witnesses.
Discover this historical narrative thriller adapted from Catherine Lheureux's crime novel: "Le Serment de Haine"
July 1799. Moha, near Huy, in the Department of the Ourthe.
The body of Nicolas Richelle, the village priest, is discovered in the presbytery. The man was tortured before being murdered. The premises have been thoroughly searched.
Captain Grégoire Lefèbvre, an officer of the mounted gendarmerie on his first assignment in the region, is tasked with investigating this murder, which bears a troubling resemblance to other attacks committed in the area around Huy.
The victim was a constitutional priest, one of those who accepted the authority of the Republic against the wishes of the Pope, and his parishioners despised him. A robbery gone wrong? Revenge? Or something else entirely?
Does the answer lie within Richelle's own dark secrets? What role might the hot-tempered Chevalier de Mélotte, a country gentleman, have played in this tragedy?
That is what Captain Lefèbvre must uncover.
Five-Star Voice Acting : Experience 1799 brought to life through full French voice acting featuring Martial Le Minoux (Professor Layton), Patrick Borg (Goku), Mark Lesser (Trunks), and many others.
Investigation and Exploration : Question the villagers, inspect locations, gather clues, and progress through a story-driven adventure.
Classic Point-and-Click Gameplay : Intuitive point-and-click mechanics make exploration, dialogue, and clue gathering easy to master.
Varied Interactive Sequences : Dialogues, mini-games, QTEs, and special scenes help bring the investigation to life.
A Historical Atmosphere : A carefully crafted recreation of July 1799, brought to life through a 3D visual style inspired by early 2000s adventure games.
Accessibility : Full French voice acting and complete English subtitles.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10
- Processor: Intel(R) Core(TM) i7-10510U
- Graphics: Intel(R) UHD Graphics
- Storage: 3 GB available space
Recommended
- Requires a 64-bit processor and operating system
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
New set of screenshots
Solo development is a long—and sometimes grueling—process for a project of the scope of The Vow of Hate. But we’re making progress! I can now say with near certainty that the game will release in January or early February 2027.In the meantime, here’s a new batch of screenshots—some with the sepia filter applied, others without. Still featuring a visual style that embraces the nostalgia of early 2000s point-and-click games.Read full article on Community Announcements (Tcherry)Community & EventsOfficial
Steam Next Fest – Play the Demo Now
The Steam Next Fest is live.Step into 1799 and investigate a brutal assault in this story-driven historical thriller.Interrogate suspects, explore authentic locations, and uncover the truth.Read full article on Community Announcements (Tcherry)Community & EventsOfficial
Steam Next Fest LIVE – Beyond the Demo
Join the developer live for the opening of Steam Next Fest. Watch exclusive gameplay beyond the demo and discover new areas of this story-first historical thriller set in 1799.If you enjoy what you see, please consider adding the game to your wishlist.Read full article on Community Announcements (Tcherry)AnnouncementsOfficial
Demo Available – Grégoire Lefèbvre Investigations : The Vow of Hate
Hello everyone,The demo for The Vow of Hate is now available on Steam.Feel free to try it out and share your feedback — it really helps improve the game. If you enjoyed the demo, adding the game to your wishlist is a great way to support the project.👉 Demo and wishlist page: I’m developing the game solo, and you can also support this long-term project through this Ulule campaign: https://fr.ulule.com/le_serment_de_haine/If you enjoyed the demo and plan to purchase the game on release, please note that the €15 Ulule reward tier is essentially a discounted pre-order. Le Serment de Haine is expected to be priced around €18–19 at launch.Thank you for your support, and I hope you enjoy the demo!Read full article on Community Announcements (Tcherry)
