Beware Planet Earth!

nc_content; Beware Planet Earth! is a 'tower defence' game in which you have to prevent a swarm of cute looking aliens from stealing all the cows from our beloved planet Earth. To do so, you have a load of (about 20) absurd weapons to put in the the aliens way. These consist mostly of farm machines that, with some slight modifications, become lethal weapons. There are many different types of al...