Does every choice in the game have a "…" option in it or do you have to say something sometimes? I'm wondering since I'd like to play every episode over and see what happens if you're a mute the whole time during conversations with people.

There is a point where (I play the iPhone version) once you find Clementine, she will ask what's your plan. Travel by day or wait till nightfall. You will have to choose one.

Pivotal choices, lee will talk, and also sometimes lee adds things of his own accord that aren't choice critical, but damn near mostly, you can.

Looks like someone did it

@papercut said:

Looks like someone did it

It said that the video does not exist. I'm not sure if this was an accident or on purpose...

@SexyToad: I swear it's real! Just look up walkind dead silent lee on youtube! IM NOT CRAZY!

Guess you can't be silent all the time. Oh well.

I was planning on having another playthrough where I said nothing at every opprortunity, see what would happen

I think it'd be interesting

There's one point in Episode 3 where you have to say something or else you will get a Game Over.

I thought about doing a Gordon Freeman playthrough, to see if it would be funny, but there are a couple parts where you have to speak as early as episode 1.

@Phatmac: I'm going to try this right now, I'll record my playthrough in case anyone wants to see any parts, I doubt anyone will though. There are parts where you only get two choices though, neither of which are "...".