Aliens have invaded the earth, be the strongest on the battlefield. do not let them take you down! build the strongest military equipment to face this extreme situation. to do this, merge two tanks together to make one even more powerful. also connect the tanks to each other to have a greater self-sufficiency. place this new tank on the battlefield to get it into action. collect enemy ships and drones for rewards and crystals. go to the store to buy new equipment. can you defeat the invasion?
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