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The alien invasion of Earth in preparation for the eradication of the Earth in seven days, as the protector of the earth, you need to fly to the Earth's garbage monster all disposed.
In the daytime, you can eat the stars and the trees to increase your gold and the value of life
At night, more hundreds of thousands of the enemy constantly attacking you, if you can not solve, you can use the skills to help you throw them all away.
Different enemy have different approach, giving priority to those who have hurt a monster throw away can help you reduce a lot of pressure, some require you need to use a special way to dispose of them, be handled with care.
After the seventh day to enter the Judgment Day, I wish you good luck. :)