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Grégoire Lefèbvre Investigations : The Vow of Hate
Step into a fully voice-acted French detective story — uncover a dark mystery as Grégoire Lefèbvre in a gripping narrative adventure that blends point & click and visual novel gameplay.
General / Cinematic | Le Serment de Haine Trailer
General / Cinematic | Le Serment de Haine Intro
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Features
Single-player
Family Sharing
Steam is learning about this game 
Languages:
Interface Full Audio Subtitles
English ✔ ✔
French ✔ ✔ ✔
This game is not yet available on Steam

Planned Release Date: 2027

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About This Game

July 1799 — Moha, Belgium.
A priest is found tortured and murdered inside the village presbytery. The scene has been ransacked. Nothing is as it seems.

Step into the boots of Captain Grégoire Lefèbvre, a mounted gendarmerie officer freshly arrived from Auvergne. Investigate a brutal crime that echoes other dark events in the region. The victim was a constitutional priest, loyal to the French Republic — and despised by many of his flock. Was it a revenge killing? Or something far more sinister?

Uncover hidden motives, face political intrigue, and peel back the secrets of a village on edge. Every witness has something to hide.

FEATURES

  • Historical mystery — Explore real locations in Belgium during the French Directory.

  • Investigate & deduce — Question witnesses, search for clues, and piece the puzzle together.

  • Fully voiced in French — Experience an authentic, immersive atmosphere with English & French subtitles.

  • Inspired by the novel Le Serment de Haine by Catherine Lheureux— Captain Lefèbvre’s first case.

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System Requirements

    Minimum:
    • OS: Windows 10
    • Processor: Intel(R) Core(TM) i7-10510U
    • Graphics: Intel(R) UHD Graphics
    • Storage: 5 GB available space
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