Zombucks is a currency item dropped by zombies and given to the player as rewards for completing quests and beating stages in the Road Trip mode in Plants vs. Zombies Adventures. They are used in town mode to buy and upgrade buildings and to place decorations. Once the player finishes all the levels of Cadaver Cavern, they can use 3,000 Zombucks to buy a fifth seed slot for use in battles. A sixth slot can be bought once the player reaches U of Z. Zombucks appear as dark purple banknotes with a skull in the middle. When bundled together, they are held by a light purple band with a skull on it.