Q: How do I participate in the event?
A: Build and upgrade defensive structures on your base to get great rewards.
Q: What structures count towards event milestones?
A: Upgrade or build new Guard Towers, Domed Defense, Rally Flags, Artillery, Patriot, Metal Rain, Rail Gun and Alpha Towers to progress in the event. Mines, Walls and War Factory Crafts do not count towards this event.
Q: How do I collect my rewards?
A: You will find your rewards in your gift box.
Q: How long does the event run?
A: The event runs for 7 days.
Q: Why are my milestones more difficult than my friends?
A: Milestones are decided taking into your account your progress within the game. The rewards are also matched according to the difficulty.
You can join in the discussion here.