Clash of Clans Unlimited Heroes and Hammer Jam Strategy Guide

During the Clash of Clans Unlimited Heroes event paired with Hammer Jam, keep your hero altars upgrading continuously while deploying those same heroes in offensive attacks. Because heroes remain available for offensive armies despite undergoing upgrades, you can progress through upgrade timers without benching yourself from regular Clan Wars or Clan War Leagues.

How Unlimited Heroes Changes Upgrade Rules

Under standard game rules, starting an upgrade puts a hero out of commission for all offensive battles unless you instantly finish the upgrade with a Book of Heroes or Hammer of Heroes. During the Unlimited Heroes event window, an upgrading hero remains fully usable in your deployment bar at their current level's baseline stats.

The single exception is home village defense. An upgrading hero will not wake up to defend your base when an opponent attacks you. Pull your Town Hall and high-priority resource storages behind core defenses such as the Monolith, Eagle Artillery, and Scattershots to help compensate for the lack of defending heroes.

Because heroes remain operational on offense, do not spend Books of Heroes or Hammers of Heroes during the promotional period. Let natural builder timers run on your hero pedestals, and reserve instant-completion magic items for after the event ends.

Builder Allocation Between Heroes and Hammer Jam

Hammer Jam reduces structural upgrade costs, creating competing demands for your builders and resources. Neglecting hero levels to chase temporary defense discounts is inefficient because standard hero downtime returns as soon as the event closes.

Divide your builders between offensive hero progression and discounted village construction:

1. Dedicate Builders 1 and 2 to Dark Elixir Heroes: Keep the Archer Queen and Barbarian King upgrading non-stop to advance key offensive thresholds.
2. Assign Builder 3 to the Grand Warden: Upgrade the Grand Warden continuously using standard Elixir, which prevents competing for your Dark Elixir reserves.
3. Use Builder 4 for the Royal Champion or Extra Dark Elixir Upgrades: Direct surplus Dark Elixir into the Royal Champion once your primary heroes are actively upgrading.
4. Reserve Builders 5 and 6 for Hammer Jam Discounts: Funnel excess Gold and Elixir into walls and short-timer defensive structures to capitalize on reduced building costs before the event concludes.

Resource Farming Priorities

Sustaining continuous hero levels demands a steady flow of Dark Elixir and standard Elixir. Since you have access to your full hero lineup, you do not need expensive, troop-heavy war compositions to secure resources.

• Run Sneaky Goblin Farming Armies: Combine Sneaky Goblins with Jump Spells and Earthquake Spells for fast core penetration into enemy Town Halls and Dark Elixir Storages.
• Support Resource Raids with Full Heroes: Use your heroes to clear external collectors and target interior storage compartments without investing Dark Elixir into heavy support troops.
• Maintain High Raid Frequency: Faster turnaround times per raid allow you to refill storages before builder timers complete, preventing idle builder time.

The Odyssey Themed Cosmetics

The update content accompanying the event introduces The Odyssey cosmetic set, featuring aquatic, mythological-themed hero skins and matching village scenery. These cosmetics alter visual models, gear, and deployment animations, but they provide no combat stats or gameplay advantages. Evaluate store bundles and event tracks purely on personal preference while focusing your active gameplay on hero progression and structural upgrades.