Twilight's Fall – a separate game. Twilight Imperium's expansions, mods and rules topics are not part of it.

Polemarch's Hive

The unit's PRODUCTION value is equal to the number of structures you control in or adjacent to this system.
Cheiran HordesUnit – Structure – Monument

Monument

The unit's PRODUCTION value is equal to the number of structures you control in or adjacent to this system.

PRODUCTION X

Placement
Cultural

Source: Monuments