With biochemistry polluting a island, a mass of bugs became evil, started attacking trees. You're sent on a mission to eliminate biochemical trees and eradicate the evil bugs.
Organic monsters want to capture our planet. People are in danger! Kill all enemy aggressors. Build your towers and battle units and strike a SMASHING BLOW to the foe!
Set of viruses have united to attack a hospital. They want to infect all people inside like ebola virus. Build defensive medicine towers and stop virus attack at all costs!
