Dr. Zomboss's Revenge is the final mini-game on most versions of Plants vs. Zombies, Plants vs. Zombies: Journey to the West, and Plants vs. Zombies: Great Wall Edition. This mini-game is similar to the last level of Adventure Mode, but Dr. Zomboss is more difficult to defeat because the Zombot has double health than its previous encounter, which is equivalent to 3,165 normal damage shots. It is also a conveyor-belt level, meaning the player is forced to use a predetermined set of plants, rather than to choose them on their own. Between the two, this level can be quite a challenge.