The Center Fortress is the core of an alliance. Build it to start an Alliance Territory.
- Center Fortress requires 1,000,000 Alliance Credits, 20 Alliance Members, and 500,000 Alliance Power.
- Alliance Fortress 1 requires 5,000,000 Alliance Credits, 2,000,000 Alliance Food, 2,000,000 Alliance Wood, 1,500,000 Alliance Stone, 990,000 Alliance Gold, 50 Alliance Members, and 5,000,000 Alliance Power.
- Alliance Fortress 2 requires 9,900,000 Alliance Credits, 5,000,000 Alliance Food, 5,000,000 Alliance Wood, 3,000,000 Alliance Stone, 2,000,000 Alliance Gold ,50 Alliance Members, and 5,000,000 Alliance Power.
- 1st: 50k Alliance Credits
- 2nd: 50k Alliance Credits
- 3rd: 50k Alliance Credits
- 4th: 50k Alliance Credits
- 5th: 50k Alliance Credits
- 6th: 50k Alliance Credits, 50k Alliance Food, 50k Alliance Wood
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