Seaport is available in City Center at level 50.

Quest Steps

Step 1/12:
Train 5 Engineers (University)
Help your friends with 50 buildings
Collect 25 Trophies (Tennis Court, Volleyball Court, and Stadium)

Step 2/12:
Collect 20 Barrows of soil (Farm => Squash)
Collect 5 Concrete Slabs (Cargo Port)
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Step 3/12:
Produce 35 lots of Corn (Farm)
Collect 22 Ring cakes (Bakery)
Collect profits from Lighthouse 3 times
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Step 4/12:
Produce 15 lots of Tile (Construction Factory)
Collect 18 Pistons (Shoe Shop)
Collect 3 Reinforcements (Cargo Port)
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Step 5/12:
Save up 150000 coins
Collect profits from Shoe Shop 30 times
Collect 10 Hearts (Wedding Palace, Film Set, “Love” Reality Show)
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Step 6/12:
Collect 12 Pumps (Water Tower)
Collect 20 Screw wrenches (friends’ cities, random drop)
Ask friends for 15 Pipes

Step 7/12:
Collect 1750 goods
Collect 25 Stars
Collect 10 Ropes (Textile Factory => any)
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Step 8/12:
Produce 15 lots of Cables
Collect 9 Lightbulbs (Electronics Plant => Mouse)
Collect 8 Bearings (Auto Repair Shop)
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Step 9/12:
Collect 10 Fire extinguishers (Water Tower)
Collect 30 Excursion tickets (friends’ cities, random drop)
Ask friends for 5 Security cameras
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Step 10/12:
Collect 10 Helmets (Hat boutique)
Collect 50 Green paints (Flower Kiosk
Ask friends for 15 Paintbrushes
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Step 11/12:
Train 3 Engineers (University)
Train 8 Mechanics (College)
Collect 10 Screw wrenches (friends’ cities, random drop)
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Step 12/12:
Collect 35 Ropes (Textile Factory => any)
Collect 45 Party Poppers (Beach Shop)
Ask friends for 15 Lifebuoys
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Your rewards: 1700 coins, 5 XP points, 5 Superbucks, and 2 Rostral Columns