Instruction:You need to copy the texts after the "#" upto 5 characters which will look like "2A4F2" this. Copy it and send it to your friends to invite them.
Get ready to defend your fortress against powerful waves of various units. They form huge waves of deadly enemies, that will erase your fortress if you won't stop them. Use primary gun to shoot them, additional system will do it automatically. Activate weapons from the bottom panel for targeted strike. Complete levels and upgrade.
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