This new edition concludes the Half-Life 2 development story, with never-before-seen concept art from Episode One and Episode Two, along with ideas and experiments for the third episode that never came to be.
Not that it should be a surprise to anyone, but is this the first time Valve has openly admitted that Episode 3 is officially cancelled?
I think HL3’s meme status is the only reason a lot of gamers today do know it. If it had come out, it would’ve been forgotten.