Endless Zone

Challenge Zone in Plants vs. Zombies 2: It's About Time is unlocked after beating the final day of each world. The levels are known as Pyramid of Doom, Dead Man's Booty, and Big Bad Butte. In the game, players start off with four plants (Sunflower, Wall-nut, and Peashooter) then they get to pick one more plant at the beginning of each round. They can also choose more sun or to recharge Lawn Mowers.

They player can save and quit between each level, and all their Plant Food are kept from one level to the next one. Also, if you lose a Lawn Mower, you may exceptionally get a bonus Lawn Mower between two levels, but it's really rare.

The player can only buy one Plant Food per level and all Power-ups can be only used once per level too.

Pyramid of Doom
The Pyramid of Doom is located in Ancient Egypt.

It is advised to take Grave Buster as some levels are almost full of graves at the beginning. Even though these can be crushed, it needs a long time to do so. The player may also want to take Potato Mine and Iceberg Lettuce which are useful.