The Roof (known as Roof Battle in Plants vs. Zombies: Journey to the West) is the fifth and final stage of Adventure Mode and takes place on top of the player's house. It consists of a 5x5 sloped side at the back and a 4x5 straight side in front with a satellite dish on the zombie side and a chimney on the player's side where the zombies enter when you let one escape.
Straight shooting plants (Peashooters, Starfruits, etc.) will not be able to hit zombies if planted on the sloping side (although they can fire over the edge when planted on the first sloped column next to the straight columns), so the player will need to use lobbed-shot plants for this stage (the player can use Fume-shrooms too, but the need of waking them up using Coffee Bean and their short-range may prevent the player from using them much). They also need Flower Pots to place plants on the roof. Because it takes place during the day, sun falls from the sky during this stage, and mushrooms fall asleep. There are no Lawn Mowers, so until Roof Cleaners are purchased from Crazy Dave, the player's last line of defense is their leftmost plants. This stage also has "ambush zombies", which are actually Zombies (or Conehead Zombies and Buckethead Zombies) that are dropped by Bungee Zombies onto the roof, possibly into the player's defenses, although they can be repulsed by Umbrella Leaves. This is similar to the zombies that surface from the Pool and the zombies that come out of graves. Overall, this is the hardest area of the game to overcome.
The plants added to this level are specially made to fit the roof. For example, due to the slope of the roof, catapult plants must be used. These include the Cabbage-pult, Kernel-pult, and Melon-pult, which are all lobbed-shot plants. These plants are essential to roof levels, because of the slope of the roof. Flower Pots are also essential for planting on the roof because plants can't be planted on the roof without them. The other plants added in the roof stage are Coffee Beans, Garlics, Umbrella Leaves, and Marigolds.
* - Only appears in the final wave. ^ - Console version only.
Plants vs. Zombies: Journey to the West exclusive (Archived content)(China only)
In addition to the pre-existing ten stages, there were three bonus stages exclusive to Plants vs. Zombies: Journey to the West. They all had an objective to complete. They required gems to be unlocked or specific fully grown plants in the Zen Garden.