The Virus

The Virus is a chapter in Plants vs. Zombies: The Cure. It has 15 new plants, 15 new zombies, 4 gimmicks, and 1 boss fight. It introduces 3 new buildings, the Genetic Engineering Station, the Plant Incubator, and the Zombie Containment Cells, and is completed when the player captures at least 40 zombies and 1 Gargantuar. The player is also shown how Research and Mutations work.

Storyline
The day after Zomboss's ultimatum, a giant taco appears on Crazy Dave's doorstep. He takes it to the garage to show to Penny. Penny detects the Zombie Virus in the taco, but it is too late, and Crazy Dave eats it. Penny tricks Crazy Dave into the first of the Zombie Containment Cells, registers you as a user, and deletes Crazy Dave from her user list. She also gives you a "time machine finder," in case you and her are separated.

New Plants
The 15 new plants gained here are Tranq-Wheat-Lyzer, Domegranate, Bonk Choy, Snapdragon, Clementime Bomb, Bamboring, Iceberg Lettuce, Stunion, Chard Guard, Lightning Reed, Pummelo, Leeky Pipe, Dive Chive, and Pea Pod. They are unlocked using the new DNA Scanner, and can be unlocked in any order.

New Zombies
The new zombies in this chapter are the Auto Mechanic Zombie, Zombie Plumber, Zombie Cars, and TBA.

Environment Modifiers
The four Environment Modifiers in this chapter are Non-Plant-Able Surfaces, Water, Slopes, and Night.

Strategy
This chapter can be completed quickly if you use Tranq-wheat-lyzer and Domegranate effectively. Always keep the DNA Scanner equipped, and grow said plants in your Greenhouse. The new zombies should not pose much of a problem if you use your new plants together. If Gargantuars start to overwhelm you and you are near the objective, do not be afraid to grab a Domegranate from inside the house. Use Genetic Adaptions to their fullest, and you should be fine. Build as many Plant Incubators as you can, because they are the best source for getting new plants.

Trivia

 * It is the first chapter in which Crazy Dave a zombie.
 * It is the chapter with the most new structures, with 3.
 * This doesn't count the Zombie Structures unlocked after completing The Lab Breakout.
 * It is the second chapter to have no boss battles in it.
 * The others are The Coming and The Zombie Future.