You have to buy a blue gravestone.
Buy the blue grave...
Once you have leveled high enough to access blue zombies, you must buy the blue gravestone before you can plant any blue zombies.
you need a blue gravestone.
Unlocks all the blue zombies
They are more powerful and have more abilities.
It is best that you have BLUE zombies. It will be easier to beat corporateville.
All it does is gets you blue zombies and some are more powerfull all you have to do is buy it the more you level up the more blue zombies. I hope this was helpfull
You must have 2 or more brains. Go to the market and go to items. Then go to functional and find the page with the blue (or red) gravestone and by it. Then you will be able to buy blue zombies. Do same but buy red gravestone to get red zombies
You need to buy the Blue Grave from the market for 2 Brains (available on level 1 ( 0 xp required))
There are 6 blue zombies, but their names are, in order of unlock, Zmurf (like mini zombie), Zombeauty (like girl zombie, but with eye shadow and blonde hair), Zyborg (like regular zombie, but with a cyborg eye), Kindlehead (like headless zombie but with a "flame" thing floating above its head), Zombruiser (like zombrute but with one wye bigger than the other), and zombotanist (works like garden zombie, but has a better chance of fertilizing, crazy-eye glasses, and flowers coming out of his head).
Level up to lvl 25 an buy the zombie pot. That lets you combine two zombies to make a new super strong zombie Colors are taken depending on what you put in ( E.G. Purple = red + blue) yellow is like red + green