Originally posted by sargent_johnson
id like to be able to use every type of star wars vehicles,play in every game location from starwars including both kotors,and be able to get new vehicles,and use every character seen in starwars.thatd be great wouldnt it?and you might be hearing 'RUN FOR YOUR LIVES!'from civillians when taking over a planet.
Woah, hold your horses. Remember that it's only OT era, and I doubt they'd be able to fit every character, even if it was just from the movies, not the EU.
As a side-note: I'd like to be able to hire mercenary ships and hire assasins to kill enemy generals and heros.
Vader's wife was very pregnant when she died 19 years ago. All of a sudden a 19 year old who is very strong in the force and has a distinct resembalance to him in his younger days rolls in from Vader's home planet with his old Master Obi-Wan (Who was the ONLY other person preset at the time his wife died. And to boot, the kid's last name is Skywalker.
So in answer to your question, he knew Luke was his son because his name is Darth Vader, and not Darth Retard.
-Forum post on why Vader knew Luke was his son.