Mars Colonization

Mars Colonization is the 12th world in Plants vs. Zombies 2. Four new plants are unlocked, as well as a few other zombies.

Mars Colonization takes place somewhere in the 2030's, when humans first landed on Mars. Since they have just landed most of the original terrain still remains. As well as the main house being a tent.

This world has two gimmicks. The first being that only the first four columns can be planted on. The other five colums have iron-ridden soil, unable to plant on. You need to use Flower Pot to place plants in those columns. The second gimmick is that since Mars is twice as far from the Sun as Earth, the sun that falls from the sky is only worth 25 sun. So using Sungun is a very wise choice.

Description
''It's the 2030's! We've just landed on Mars! Plants are REALLY needed, first because they turn carbon dioxide into oxygen, and second for the large zombie problem!''

Plants

 * Flower Pot
 * Sungun
 * Gingeralien
 * Goop-shroom

Zombies

 * Martian Zombie
 * Martian Conehead
 * Martian Buckethead
 * Martian Rationhead
 * Martian Gargantuar
 * Space Helmet Imp
 * Geologist Zombie

Levels
There are 22 levels. Most of the levels are somewhat medium, making this world in between Frostbite Caves and Lost City.