When starting New Game Plus, the player can trigger an easter egg by searching for three zombies hiding under three different cars scattered around the map (for this secret to work, those zombies must not get killed, knocked out or become aware of your presence). All three zombies must gather behind the Safe House in the northern part of the map, and then they each must be killed with a melee attack (again ensuring that they do not notice you, otherwise you will have to hide again until they go back to attacking the building). After killing the zombies, a gigantic crow will appear nearby, which will reward the player with 60,000 Green Gel when killed.