Cerulean Core

General information
Cerulean Core is required for upgrading nondefensive buildings and Attack Bunker to levels 10 to 14. 2 Cerulean Cores are required for level 13-14 upgrades of the Command Center. It can be obtained by the store alone or in bundles, Mission defeating Level-350 Maar, or won in Zoot's Loot, Zoot's Jackpot, Builder's Box, KIRA's Gift, or Salvage Box.

Promotions
Cerulean Core/2013, Cerulean Core/2014, Cerulean Core/2015, Cerulean Core/2016

Sales
Cerulean Core/2012, Cerulean Core/2013, Cerulean Core/2014, Cerulean Core/2015