Actually this one is great too. You just have to work your own methode of setting bro upon sis. It completes the story perfectly. I didn't know anybody plays this game as if it was normal platform/puzzle game, I tought it's all about the story. According to comments, I was wrong...
Display of amount of resources on the city screen is absolutely necessary. It would help to check whether to wait longer (watching series and scrolling fb) to full refill ; )
This game is so freakin sad... Maybe because of hormons - I'm crying either when he kills bunny or when he cuddles it. I don't think anyone was thinking about it like a social or psychological experiment while making this game.
Anyway I love the idea of humanising zombies. And this game is amazing.