LOLITRON said:
Anybody remember Valve's false advertising with HL2? No? Go back and watch the old trailers. Last I played Half Life 2 there were no branching storylines or choices I could make to change the outcome of the game, I couldn't break the shit out of everything (except for what they wanted me to), and the enemy AI was not as smart as they claimed it to be -- or even showed it to be in their gameplay trailer. People tend to ignore this because Half Life 2 turned out to be a solid game anyways.
I don't recall any of this from the trailers and news coverage I saw. Now, I didn't have stable Internet at the time, so I hardly have all the trailers - I relied on gaming magazines to include some from E3 or something with a CD. The closest I recall were the claims that you had some leeway in scripted events. In fact, the one thing that stands to mind was that glowing tentacle thingie (which wasn't in the game at the end) and the example that you could try to save the soldier it would drag down a hatch, or follow him down, or maybe just try to find a safer route to go down. Or something along those lines. I don't recall "being able to change the overall story", though. Couldn't find it either (lots of E3 footage is just snippets forming a 1 minute video and I don't even know if it's from E3).
The other thing I recall were Source engine showoffs where they showed how different materials behaved, like wood boxes being light, floating and being brakable, while metal ones were heavier and resistant to damage. Which was the same box with a different texture. And there were also physics of wooden boards and fruit and how they behaved when shot and stuff. Is this what you mean by "break the shit out of everything"? I can't recall any mention of fully destructible environment a-la Red Faction.