I think i finally found it with the help of this second screenshot ! It's
Martian memorandum ! Damn you Frodo for having me browse the entire adventure section. And that series clue was misleading as the hero (who would be Tex Murphy) stars in games with different names(and not a real series like King's quest 1,2,3,4,etc,). You perverse lil' devil
So am i right ? Is this the right game ? :blink: