My cities have produced 2 for 1 units. Aircraft carriers, destroyers and modern armour. A few times.

I have looked around and cannot work out how this can be happening.

Perhaps it is the civics? +100% production. but then again, there is 50% production.

Maybe this is a bug.

Playing emperor difficulty. Have harbour and encampment districts and many cities.

  • 1
    Do you have any wonders? I know the Venetian one lets you get 2 for 1 on naval units. Nov 1, 2016 at 20:14
  • Shame on me i thought this was a bug and reported it to 2K (while i mentioned this might be due to some wonder). However this gives you also a nice boost for gold since you could sell the extra unit. However i had a bug with carriers. The second one couldn't handle planes properly
    – Clayn
    Nov 3, 2016 at 9:59

1 Answer 1


I found the Venetian arsenal in one of my not-so-unit-producing cities.

Since the civopedia is incomplete and vague I thought I would add this answer.

The Venetian Arsenal empowers any city building a naval unit to produce 2.

Untested, but if true; A powerful wonder if building armada level units!


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