One morning, Franklin Fargo wakes up in an abandoned underground scientific facility with no external contact other than a mysterious voice. The voice calls him "Subject 13".

Born in 1964, Paul Cuisset is one of the most prolific French creators in video game history. As the co-founder of Delphine Software, he worked as a programmer, a game designer and/or a scriptwriter on titles as famous as "Future Wars: Time Travelers", "The Stealth Affair", "Cruise For a Corpse", "Moto Racer" and "Darkstone".
In 1992, his classic action/adventure game, "Flashback", was listed in the Guiness World Records as the best-selling French game across the globe.

https://www.kickstarter.com/projects/1993213058/subject-13-by-paul-cuisset

Do they know about Subject 9?

I think it's better if they don't, for it is a mediocre game.

Looks really really good

That's why I think they maybe would want to change the name of their game. Would not want to be associated with it.

Yes, Subject 9 was a disappointment (sadly, with some potential).