The one in zombie farm
buy Microsoft points then use the code put into xbox or ps3 and wala points and buy levels
In the game Plant Vs. Zombies, there are many zombie shooter "plants." There is no activation code required to use these plants. You need to beat levels in order to acquire more plants.
when you get to the main screen in the begining, with campaign mose, multiplayer, zombies etc., look down with the analog stick and you'll see 2 hands, wriggle them out of the straps by tapping r2 and l2 a few times. then walk around the room until you get to a computer, sit down at it and use it. then type in: 3arc unlock : (with the space between 3arc and unlock) if a message appears, cheat enabled, then get up off the computer and go onto zombies. you will have all the levels unlocked =)
You can unlock the map "Five" by completing the campaign on any difficulty or you can put in a code: While in the main menu press LT, RT, LT, RT and you will stand up. Go to the back of the room and press 'x' to use the computer. Type in '3arc unlock' and then go to the zombies menu and you will have 'Five' and 'Dead Ops Arcade'
Press L2/LT and R2/RT repeatedly in the main menu. Walk around and you will find a computer. Use it and type in "3ARC UNLOCK" Add me on ps3 almostasachi
after tutorial it asks you for it
Certain invasions unlock certain abilitys. While invading an icon will pop up, to activate the ability click the icon
You use a cheat code
First of all if you beat the whole campaign, you will unlock "Five" which takes place in the pentagon. You can also get out of the chair in the main menu and go to the back of the room to use a computer. You can just put in "DOA" to unlock the mini zombie game which is a third person shooter, but is is still fun. And of course one map is already unlocked in the begining when you get the game.
To unlock all guns use code 15ftyo0
To unlock all guns use code 15ftyo0
use the code 'earth243'