Swords & Serpents (CIB, complete in box, FRA, NES)

The Baldur's Gate 3 of the 80s! 
Also, fun fact; not only does this game contain both swords and serpents, but also skeletons and spooky ghosts!
We're assuming they probably realized, when naming the game, that "Swords And Serpents And Skeleton And Spooky Ghosts" was too long of a name, with too many S's., so it seems like they made a smart call with the naming. 

Condition: Okay, complete in box. Please note, despite the box having English language, the entire game is in french!