Enclosure - besides destroying the enemy you have to build a wall, door, to stem the tide of attackers. Enemies excellent weapon, everything else they have access to the most important points that you need to protect, using force fields and an arsenal of weapons. Threatens to destroy your world. The aliens discovered the secret hole, through which they were able to reach Earth orbit. The Government has developed a project that will give an opportunity to put a kind of patch these holes. Your main task - to entice newcomers and shut the hole, catching them, so, in the trap. Download the file:
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