The Fortress is the heart of your City. Monitor your resource production and adjust the tax rate here.

You start out with a level 1 Fortress already built. The look of your level 11 Fortress depends on the Race of the character. You can change your race by using a Tribal Rebirth.

The level of your Fortress determines the number of fields you can build, as well as how many wildernesses you can control at that time. This information is shown by clicking on the Fortress.

Once your fortress is lvl 11 you can start upgrading your all other buildings to level 11 and above.

Requirement to Upgrade and Power Boost

Level Food Lumber Metal Stone Time (Levitation 0) Power
2 400 600 200 5000 30m 100
3 800 1200 400 10000 1hr 1min 30s 100
4 1600 2400 800 20000 2h 4m 33s 200
5 3200 4800 1600 40000 4h 12m 13s 400
6 6400 9600 3200 80000 8h 30m 45s 800
7 12800 19200 6400 160000 17h 14m 17s 1600
8 25600 38400 12800 320000 1d 10h 54m 25s 3200
9 51200 76800 25600 640000 2d 22h 41m 13s 6400
10 102400 153600 51200 1280000 5d 23h 8m 29s 12800
11 204800 307200 102400 5120000 10d 16h 25600

Note: The power boost received from the Fortress is the same as you would receive from the Wall or the Dragon Keep. The power you receive is cumulative. The total power that you can receive is therefore 51,200.

When you click on the Fortress, you will see this screen. At the top, it tells you the usual information about the building. The blue text tells what you are currently able to have. The white text tells you what the benefits of the next level are.

At the bottom, it tells you what your resource production rates are, and the boosts you are currently receiving from wildernesses and Nanos' usage. 

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