A HUMAN player who wants to comment in the game without risking infection needs to attach an original photo to the tweet along with #picsafe and #TvsZ. The photo should add to the narrative of the game. If your tweet has a photo attached and the #picsafe, #TvsZ hashtags, zombies may not bite you for that tweet. Other tweets will still leave you vulnerable. Humans may not post consecutive #picsafe tweets. You may recharge your ability to use a #picsafe tweet by making a regular tweet.
A ZOMBIE player may earn an #extrabite by composing a tweet with an original, relevant photo OR short video (for example, Vine) that adds to the narrative of the game. The tweet should include #TvsZ, #extrabite, text about the significance of the photo, and the @name of the victim. A zombie may only use one #extrabite per thirty minutes.