When it came time to photograph the box art of L4D1, our art staff had three goals. One, there should be a hand in it somehow. Two, the hand should have a thumb bitten off, so customers would look at the four fingers remaining on the hand and think, "Hey, four." Three, under no circumstances would we use Photoshop. L4D is a visceral experience, and its box art deserved the same approach. Valve artist and L4D1 hand model Andrea Wicklund was more than happy to help.