Archived from groups: alt.games.vgaplanets4 (More info?)
I ran some tests with undercities vs. regular cities.
20 bases with undercities (100,000 colonists)
20 bases with regular cities (100,000 colonists)
Each base was attacked by a Lizard-owned Sepent Class Escort, equipped
with Blaster Cannons.
2 bases with undercities survived. In both bases, the ship never got
close enough to fire its Blaster Cannons.
9 bases with regular cities survived. Of those nine, 2 of them
survived because the ship never got close enough to fire its blaster
cannons.
It would appear that having undercities does absolutely nothing to
protect your base from orbital bombardment.
I ran some tests with undercities vs. regular cities.
20 bases with undercities (100,000 colonists)
20 bases with regular cities (100,000 colonists)
Each base was attacked by a Lizard-owned Sepent Class Escort, equipped
with Blaster Cannons.
2 bases with undercities survived. In both bases, the ship never got
close enough to fire its Blaster Cannons.
9 bases with regular cities survived. Of those nine, 2 of them
survived because the ship never got close enough to fire its blaster
cannons.
It would appear that having undercities does absolutely nothing to
protect your base from orbital bombardment.