The application looks for popcapgame1 process. If the game process is something else, the exe file must be renamed to popcapgame1.exe. The program allows the user to choose the probability for each zombie type, how often to spawn a zombie and which lanes should be used. If pool level is chosen then the program will not spawn land-only zombies on water and visa versa.
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Click Here For Demonstration
(I did not own this program)
Original Site http://wiki.intelorca.co.uk/PvZ_Tools