The Hammer Jam event has returned to Clash of Clans ahead of the highly-anticipated release of Town Hall 17. Here's everything you need to know about it!

If you're a Clash of Clans player, then we know for a fact that you love the Hammer Jam event. It offers players the chance to quickly upgrade their buildings as massive discounts to upgrade costs and times will be available for a limited time.
But, there's also another reason why Hammer Jam has become such a beloved event in the community – it signals the arrival of a new Town Hall level. The next level coming to Clash of Clans in 2024 will be Town Hall 17, and it's expected to be released after this event ends.
The current Hammer Jam event began on November 8 and will end on November 25, 2024. This will give you approximately two and a half weeks to reap the most out of the event.
Hammer Jam Event, Explained

If you're behind on your building upgrades – as we imagine most of you are – then the Hammer Jam event is certainly a welcome one. During this time, both upgrade times and costs for all buildings in the Home Village will be reduced by 50%. This will affect structures such as the Eagle Artillery and Walls for all Town Hall levels.
For the first time in Clash of Clans history, Heroes, Troops, Spells, Siege Machines, and Pets will also join in on the fun for the Hammer Jam event. Like buildings, the upgrade costs and times for all the aforementioned items will be reduced by 50%.
In addition to all of this, everyone will automatically receive a 3x resource production boost and a 3x increase in resource storage capacity, regardless of your current Town Hall level.
The Goblin Builder will also be available for the duration of the event if you need additional help. You will need to spend Gems to assign him to an upgrade.
All Chest Rewards You Can Get In The Hammer Jam Event

Something interesting Supercell implemented for this year's Hammer Jam announcement video was the ability for viewers to "choose their path" in terms of what they wanted to learn about the event. As you watched the video, you had the chance to craft your story by choosing between two videos at the end of each video until the path ended.
If you chose correctly, so to speak, you would be rewarded with three free Chests. We have listed all the reward links below:
As a reminder, Chests can reward you with items such as resources, magic items, magic snacks, Ores, and cosmetics.
You can earn additional rewards by completing the 'Last Town Hall 16 Challenge?!' which will be active during the entirety of the Hammer Jam event. Mount a successful attack in the challenge and you can get 400 XP, 25 Gems, and 1 Resource Potion.