Subscriber Advance
Subscriber Advance. Greatly increases renewable fortification generation each day. This advance is intentionally around two to three times stronger than a normal advance of the same type.
Acquisition: Subscriber Research
Duration: Permanent
Requires: Active Subscription
Bonuses
| Permanent Fortification | 52 |
This advance is visible when unlocked for the nation, but can only be selected while the nation has an active subscription.