This game may be a bit sedative in nature because here in the game, you are playing the role of an anti-human operator. Your motive is to kill the entire human on the planet and for that you have decided to grow an army of delay and evil mutants. The meat collected by the mutants can be used to create more mutants, avail upgrades and also develop the units. If you want to earn invasion points, you have to do really well to accomplish the main objective in the game and also complete various additional tasks. The invasion points are very important as they are used to buy upgrades that are permanent and very effective.