IMHO.

Mata Hari vs Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™

Mata Hari and Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™ both land in Adventure on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both are Adventure games on Steam. Mata Hari (2009) is 5 years older than Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™ (2014). Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™ scores higher on Steam reviews (93.2% positive) than Mata Hari (57.1% positive). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.

Side-by-side comparison

Mata Hari vs Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™ — Steam metadata comparison
Mata Hari — Steam game coverMata HariValiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™ — Steam game coverValiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™
Released20092014
GenresAdventureAdventure
PlatformsWindowsWindows
Steam DeckUnratedDeck Playable
Price9.99 USD14.99 USD
Steam reviews57.1% positive (28 reviews)93.2% positive (7,246 reviews)
MultiplayerSingle-player onlySingle-player only
Developers4Head StudiosUbisoft Montpellier

Side by side

Mata Hari vs Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™ — FAQ

Should I play Mata Hari or Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™ first?
If you want chronology, Mata Hari (2009) came out before Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™ (2014). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
Are Mata Hari and Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™ similar?
They overlap on Adventure on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.