I played the game and well at first I wasn't really sure of what I had to do. It was also confusing to know where the characters are located due to the lack of a MAP, so it feels like playing with luck at the very beginning since you don't really know where you are going out to at first and a zombie could catch you right away.
A small tutorial could help the new players to understand how the controls work. It took me around 5-10 minutes to "kind of" understand the controls system despite it relatively being really simple.
A sound for when you pick a response would be a nice touch too.
Will give a try to the new version too, since I just saw it was updated a couple days ago.