Talk:Christmas 2014 Event/@comment-76.7.121.32-20141224205222/@comment-25021853-20141225133013

You have to get the Cannon Control Building first, then you will get some Cogs at random (I get 4 most times) when capturing and bottling Elves. You can buy the Cogs in the Store too, at 2 Donuts per Cog and there's no bulk discount. You use the Cogs to Upgrade your Elf Cannon, which will reduce the time to reload and fire the Cannon, increase the number of Elf Bells per Elf fired, or increase the number of Elves fired each salvo for each Level increase. It costs 20 Cogs for the first Upgrade, 35 for the Second, and should keep increasing for each Level.