"Free Zombie" Game

One day, scientists were conducting experiments and a biological disaster occurred. Now chaos and gloom reign on Earth. And how else could it be - the living dead are crawling out of every grave. They are tormented by severe hunger in the game Free Zombie, which can not be quenched by anything but human meat. Entire squads of the living dead roam the planet and destroy all life. Soon there will only be a dead desert on the planet. But there are still some islands where there is normal life. Only people there is not good - they are forced to repel daily attacks of zombies. What can save the remnants of humanity? Only a vaccine created by a biologist, which he injected into some plants. Act as farmers, who barely have time to replant around the flora.