Fortifications can be built to help defend a population centre. These range from
Tower – Fort – Castle – Keep – Citadel
Each level of fortification increases the population centre’s defences, which must be overcome in the event of being assaulted or threatened by an enemy army. Their presence also helps restrict movement through the area of armies belonging to nations the population centre’s nation does not have friendly or tolerant relations with. Armies that are defending their own population centres will also receive a bonus to their combat defence based upon the level of fortifications.
Fortification levels are increased through issuing the fortify population centre order. Only one level of fortifications can be erected per turn. For example, a tower cannot be improved to a keep in one turn even if three characters were available to give the necessary orders. It is, however, possible for an agent to reduce an enemy population centre’s fortifications by more than one level in a single attempt on given turn.
| Type | Gold Cost | Timber Cost | Defensive Value | Troops to Overcome |
|---|---|---|---|---|
| Tower | 1,000 | 1,000 | 2,000 | 800 |
| Fort | 3,000 | 3,000 | 6,000 | 2,400 |
| Castle | 5,000 | 5,000 | 10,000 | 4,000 |
| Keep | 8,000 | 8,000 | 16,000 | 6,400 |
| Citadel | 12,000 | 12,000 | 24,000 | 9,600 |
Timber must be available in the population centres’ stores, whilst the gold must be available in the nation’s reserves.
Unless hidden, fortifications restrict movement through a hex for friendly or tolerant relations with. Armies will be required to stop.