Big Walk gives you fun challenges and situations that can enable or restrict your talking in different, and interesting, ways. For example, you might find yourself in a situation where you can’t hear each other, and you need to find other ways to communicate. That’s only possible with the built-in, in-game voice chat.
We know that in some games, in-game chat is totally optional, and the game is still fun without using it. But in Big Walk, voice chat is the key to making the game fun!