+
Expansion allows the player to enlarge the building area of city. One expansion unlocks an area of 4x4 tiles that is placed adjacent to the current building area grid. There are three ways to expand the building area, by paying with coins, medals or diamonds. Expanding is crucial due to the influx of great buildings, and the requirement for population. You start the game with 16 4x4 tiles.
Expansion by coins needs to be researched in the technology or rewarded upon conquest of a province before players can expand. Expansion by medals and diamonds do not have this limitation. However, expansion by diamonds is limited 2 expansion per age, that means players can only unlock a maximum of 16 expansions. Expansion by medals has a maximum of 13 expansions and expansion by coins has a maximum of 47 expansions (30 by research and 17 by conquest). Till the next age or era is added the max city size is 92 expansions. The next age or era should give us the last 8 expansions to complete the 100 expansion grid of the city.
Expansion Fee
*Note that, in the column of coins, the player can pay either gold or diamonds after having researched the expansion technology. The expansion fees of different columns are not successive.
| No. of expansion | Coins(Diamonds)* | Medals | Diamonds |
|---|---|---|---|
| 1 | 100 / 50 | 10 | 200 |
| 2 | 300 / 50 | 50 | 200 |
| 3 | 400 / 50 | 200 | 400 |
| 4 | 600 / 50 | 500 | 400 |
| 5 | 800 / 100 | 1000 | 600 |
| 6 | 1000 / 100 | 2000 | 600 |
| 7 | 1300 / 100 | 3000 | 600 |
| 8 | 1800 / 100 | 4000 | 600 |
| 9 | 2300 / 200 | 5000 | 600 |
| 10 | 2800 / 200 | 6000 | 600 |
| 11 | 3400 / 200 | 7000 | 600 |
| 12 | 3900 / 200 | 8000 | 600 |
| 13 | 5400 / 300 | 9000 | 600 |
| 14 | 7100 / 400 | 10000 | 600 |
| 15 | 8700 / 400 | 12000 | 600 |
| 16 | 10000 / 400 | 15000 | 600 |
| 17 | 12000 / 400 | 18000 | - |
| 18 | 14000 / 400 | 21000 | - |
| 19 | 16000 / 500 | - | - |
| 20 | 20000 / 500 | - | - |
| 21 | 24000 / 600 | - | - |
| 22 | 27000 / 600 | - | - |
| 23 | 31000 / 600 | - | - |
| 24 | 35000 / 600 | - | - |
| 25 | 39000 / 600 | - | - |
| 26 | 47000 / 600 | - | - |
| 27 | 55000 / 600 | - | - |
| 28 | 63000 / 600 | - | - |
| 29 | 72000 / 600 | - | - |
| 30 | 80000 / 600 | - | - |
| 31 | 90000 / 600 | - | - |
| 32 | 100000 / 600 | - | - |
| 33 | 120000 / 600 | - | - |
| 34 | 140000 / 600 | - | - |
| 35 | 160000 / 600 | - | - |
| 36 | 180000 / 600 | - | - |
| 37 | 200000 / 600 | - | - |
| 38 | 230000 / 600 | - | - |
| 39 | 260000 / 600 | - | - |
| 40 | 300000 / 600 | - | - |
| 41 | 340000 / 600 | - | - |
| 42 | 380000 / 600 | - | - |
| 43 | 420000 / 600 | - | - |
| 44 | 470000 / 600 | - | - |
| 45 | 520000 / 600 | - | - |
| 46 | 570000 / 600 | - | - |
| 47 | 620000 / 600 | - | - |