Should I save my builder potions for hammer jam?

Yes, you should absolutely save and use your Builder Potions during Hammer Jam (HJ) because the halved upgrade times effectively double their value, allowing you to get massive progress on long upgrades and heroes by stacking the 10x boost with the 50% time reduction, making them super efficient for catching up on your base.
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Do builder potions stack with hammer jam?

Use Builder, Research and Pet Potions during Hammer Jam as with reduced upgrade times, they will offer 2x the value. Purchase the Gold Pass and unlock the Builder and Research boosts as these will stack with the reduced upgrade times during the event.
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How to maximize Hammer Jam Coc Reddit?

Rush to 17, get your offensive upgrades done, then focus on heroes as much as possible, and upgrade defenses to max-1 level one at a time. Those will be your Hammer targets later on, saving 15d a pop rather than doing manually (unless strictly necessary)during Jam.
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Which is the longest upgrade in coc?

The longest upgrades in Clash of Clans occur at the highest Town Hall levels, with Town Hall 17 (TH17) holding the current record for individual upgrades, specifically Laboratory research taking over 11 months (11d 22h), while Builder Base and Pet upgrades at TH17 also reach several months; older TH levels saw 20-day upgrades for key defenses like Eagle Artillery, but modern updates significantly reduced mid-game times, shifting the longest waits to the latest TH levels for Lab and Pet upgrades. 
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What happens after 90 days of inactivity in coc?

If you haven't played for 90 days, you'll automatically receive a 48-hour Magic Shield to protect your resources from attacks during that time. Your Village will also receive some boosts to get you back into the swing of things.
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Why You Need to Start Preparing for HAMMER JAM NOW!

Is a gold pass worth it during a hammer jam?

Hammer Jam's 50% + Gold Pass's 20% = a total of 60% faster upgrades. That's not “math magic,” that's just beautiful, game-breaking math. Use code BLUE for any purchases in Shop. Double down with potions — Research and Pet Potions are worth twice as much during the event since upgrade times are halved.
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What if I use two builder potions?

If you use multiple resource potions, only their durations will stack, not the amount of resources generated. If you use two potions it will last twice as long not twice as fast. So the boost goes for two days not 4x for one day.
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How many wall rings for level 12 to 13?

To upgrade your walls from Level 12 to Level 13 in Clash of Clans, you'll generally need 3 Wall Rings per wall segment, as Level 13 walls cost 3 million Gold/Elixir, and each ring covers 1 million resource cost, so 3 rings cover that upgrade. 
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How long does hammer jam go for?

Hammer Jam in Clash of Clans is a limited-time event that usually lasts around 2 weeks (14 days), but the exact duration can vary slightly, with recent events running 14-18 days, offering massive discounts (50% off) on upgrade times and costs for structures, heroes, and more, to help players rapidly upgrade their bases before new Town Hall releases. For the recent November 2025 event, it ran from November 1st to November 17th, about 17 days. 
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Is builder bite stackable?

In Clash of Clans, Builder Bites (a 2x speed boost for 1 hour) do not stack additively with each other or with Builder Potions; using multiple bites or a bite and potion just extends the duration, not the speed boost (e.g., two bites = 2 hours of 2x speed, not 4x speed), and they don't work on the Builder's Apprentice, explains the Clash of Clans Wiki Fandom.
 
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How many gems to max out coc?

Maxing everything in Clash of Clans is an immense gem investment, easily running into hundreds of thousands, even over a million gems, depending on the Town Hall level (like TH17 costing over 1.5 million gems in total resources and time), as you'd be skipping all resource costs and builder/lab times, with costs escalating significantly for high-level walls, heroes, and essential items like the Laboratory and Helper Huts. It's a colossal amount, showing why players focus on smart gem use for boosts, Gold Pass, or skipping some upgrades rather than everything. 
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How to get 500 gems coc?

When players first download the game, they begin with 500 Gems (250 of which you are forced to use during the tutorial, and another 8 if you rush the buildings and troops when prompted). Additional Gems can be earned in-game by completing Achievements, clearing Obstacles or purchased with real money.
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Is a Builder Potion worth it?

Compared to the normal rate, using a Builder Potion saves nine hours of builder time per builder, as each builder will do 10 hours' worth of work in one hour. As such, to get the best value out of this item, it is recommended to be used when all builders are currently working on upgrades that last at least 10 hours.
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Is coc still popular in 2025?

Yes, Clash of Clans is still very popular in 2025, maintaining a large, dedicated player base with millions of daily users, consistently ranking as a top-grossing mobile game thanks to Supercell's frequent updates, new content (like Town Hall 16/18, Clan Capital), and ongoing efforts to improve progression for new and old players, even if its peak popularity was in the mid-2010s.
 
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What happens if you don't play Clash of Clans for 90 days?

If a Leader hasn't logged in for 90 days, the system will start the automated leadership rotation. 60 days of inactivity: An in-game message is sent to the entire Clan, explaining that rotation will happen if the Leader stays inactive. The longest-serving active Co-Leader or Elder will be chosen.
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