I'm playing Civilization 5 and, out of a sudden, my city started to attack as a catapult. It used to throw arrows, now it throws rocks. What did I do?

  • Did your research efforts unlock Mathematics (which gives you the Catapult unit)...?
    – Albort
    Jul 3, 2014 at 2:26

1 Answer 1


The technologies in Civ 5 are broken up into various eras. The first time you research a technology from a new era, you'll see some graphics update. This means that the city will change in appearance in accordance to that era and the city long range attack with it.

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