Want to maximize your free gems and rewards in Clash of Clans? This consolidated guide lists every source of free gems, magic items, resources and rewards in the game, with pro strategies to leave nothing on the table.
💡 Quick tip: an organized free-to-play player can stack 3,000-5,000 free gems per year plus dozens of Magic Items. That’s the equivalent of several hundred euros in paid progression.
Table of contents
- Achievements: the massive one-shot source
- Free monthly events
- Free Magic Items
- Capital Raids: the weekly farm
- Clan Games every 28 days
- Hammer Jam: the unmissable annual event
- Star Bonus & Daily Star
- Strategies to optimize your gains
Achievements: the massive one-shot source
Achievements are the main one-shot gem source in Clash of Clans. There are more than 60 to unlock in total.
Top 10 most profitable achievements
| Achievement | Gem reward |
|---|---|
| Sweet Victory! (1 League win) | 250 gems |
| Conqueror (1,250 trophies) | 500 gems |
| War Hero (50 War Stars won) | 1,000 gems |
| Champion (3,000 trophies) | 1,000 gems |
| Mortar Mauler (5,000 mortars destroyed) | 1,000 gems |
| Wall Buster (5,000 walls destroyed) | 1,000 gems |
| Get those Goblins (50,000 resources stolen) | 500 gems |
| Heroic Heist (250,000 resources stolen with heroes) | 1,000 gems |
| Anti-Artillery (500 X-Bows destroyed) | 500 gems |
| Sharing is caring (donations) | 500 gems |
Total achievement gems: 22,000+ gems at max.
How to maximize
Many achievements progress automatically through normal play. Others require a targeted strategy (e.g. using specific troops to destroy mortars).
Free monthly events
Supercell offers multiple free events every month with rewards:
Recurring events
| Event | Frequency | Key rewards |
|---|---|---|
| Trader Special Offers | Weekly | Gems, Magic Items |
| Builder’s Boost | Monthly | Building speed-up |
| Hero Rush | Monthly | Hero speed-up |
| Clan War Leagues | Monthly | Magic Items, gems (top tiers) |
| Capital Raid Weekend | Weekly | Capital Gold, Raid Medals |
| Clan Games | Every 28 days | Magic Items of choice |
| Star Bonus | Daily | Massive gold/elixir/dark elixir |
Annual special events
- Hammer Jam (3-5 days, -75% on upgrade costs) — the event of the year
- Anniversary Event (game’s birthday, August) — rare magic items
- Halloween Event — themed rewards
- Winter Event (December) — seasonal bonuses
Free Magic Items
Magic Items are the most valuable boosts in the game. Here’s how to grab them for free:
Magic Item sources
| Magic Item | Main free sources |
|---|---|
| Book of Heroes | Clan Games, Trader, Hero Rush |
| Book of Spells | Clan Games, Capital Raid |
| Book of Buildings | Clan Games, Hammer Jam |
| Hammer of Building | Clan Games, Capital Raid (rare) |
| Hammer of Heroes | Clan Games |
| Rune of Gold/Elixir/Dark | Clan Games, Star Bonus |
| Resource Potions | Trader, events |
| Builder Potion | Daily Star, events |
| Power Potion | Daily Star (regular) |
| Training Potion | Daily Star (regular) |
Usage strategy
Classic mistake: spending Magic Items the moment you get them.
Best practice: stockpile them and spend them during Hammer Jam or Builder’s Boost to multiply their effect by 4× (cost reduction + speed-up stacked).
Capital Raids: the weekly farm
Every Friday 7am UTC to Monday 7am UTC, your clan participates in Capital Raids.
Mechanics
- Each member has 5 attacks per Raid Weekend
- You attack other clans’ Capitals
- Rewards: Capital Gold (usable in your clan’s Capital) plus Raid Medals
Individual rewards
| Clan ranking tier | Raid Medals/weekend |
|---|---|
| Capital Hall 1-5 | 50-150 medals |
| Capital Hall 6-9 | 200-300 medals |
| Capital Hall 10 (max) | 350-500 medals |
What to do with Raid Medals
At the Trader (yellow caravan), trade Raid Medals for:
- Magic Items (Books, Hammers)
- Resource Potions
- Gems (never directly, but via Magic Items sold)
Clan Games every 28 days
Clan Games are collaborative challenges. Your clan stacks points by completing objectives (earn X stars with Y troops, destroy Z mortars, etc.).
Progressive rewards
| Clan total points | Player rewards |
|---|---|
| 1,000 points | 1 Magic Item of choice (Common rarity) |
| 4,000 points | 1 Rare Magic Item |
| 10,000 points | 1 Epic Magic Item |
| 50,000 points (max) | 1 Legendary Magic Item + bonus |
Tip: jump in early (3-4 challenges = 1,000 individual points). The more you participate, the easier it is for the clan to reach the final tier together.
Hammer Jam: the unmissable annual event
Hammer Jam is the most profitable event of the year. For 3-5 days, every upgrade (buildings, heroes, troops) costs -75%.
Hammer Jam preparation
- Cap your resources in the 7 days before
- Keep builders available (finish your in-progress upgrades)
- Stockpile Magic Items (Books of Building/Heroes)
- Activate the Gold Pass that month (stack -75% Hammer Jam + +30% Gold Pass speed)
With good timing, you can progress the equivalent of 3-6 months in a single week.
Star Bonus & Daily Star
Star Bonus
Each day, you can earn 5 stars in multiplayer (1 star = 1 win). Once reached, you trigger the Star Bonus:
- 5x the resources of your last attack
- Or a free Magic Item (random rotation)
Daily Star Bonus (Builder Base)
Same in the Builder Base: 3 stars/day for the bonus.
Daily total: 1 Magic Item + massive resources, just by playing 5-10 min.
Strategies to optimize your gains
Strategy 1: don’t rush your TH
A rushed base (Town Hall pushed up too fast) earns fewer resources, attacks poorly and misses the high-trophy achievements. Finish your upgrades before each TH bump.
Strategy 2: daily Star Bonus is mandatory
5 wins per day (5-10 min of play) = 1 Magic Item + resources. Over a year: 365 free Magic Items. Never skip.
Strategy 3: tier 8-10 Capital clan is mandatory
A weak Capital Hall yields 50 Raid Medals/weekend. A Capital Hall 10 yields 500. Difference: 6× more monthly Magic Items. Find an ambitious clan.
Strategy 4: Builder’s Boost > Hammer Jam for newcomers
Builder’s Boost returns monthly (-25% on builder costs). For low THs (<TH 12), that’s enough to progress without waiting for the annual Hammer Jam.
Strategy 5: keep an eye on Trader Special Offers
The Trader has 3 weekly offers. At least one is almost always profitable (Magic Items at -50% the gem price). Check every Tuesday.
Going further
- Clash of Clans complete guide (cornerstone) — game overview
FAQ
How many free gems can you earn in Clash of Clans?
An active free-to-play player can earn roughly 3,000-5,000 gems per year via achievements, events, Capital Raids and magic items. That's the equivalent of several free Gold Passes or significant accelerations.How do I get free Magic Items?
Magic Items (Books, Hammers, Rune of Builder Gems...) come from: Clan Games (every 28 days), Capital Raids (raid medals), Hammer Jam (special event), Trader Special Offers and Star Bonus Loot. Monthly total: 5-10 free Magic Items.Is Hammer Jam really worth it?
Yes, it's the most profitable event of the year. For 3-5 days, every upgrade costs -75%. If you've saved your resources and kept builders free, you can advance several months in a single week.Is the Gold Pass really worth €5/month?
For a regular player who's progressing, yes without hesitation. The Gold Pass grants +30% to all building and training speeds, monthly Magic Items (~1,000 gems of value), a free skin and a Hero Equipment. ROI ~4-5× the price.How does the Capital Raids weekend work?
Every weekend (Friday-Monday), your clan participates in Capital Raids. You earn Capital Gold (used in the Capital for upgrades) and Raid Medals (exchangeable for Magic Items at the Trader). The more active your clan, the more you collect.
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