Resource values and event rewards may change without notice. The official support pages describe systems but do not publish a complete current economy table or guaranteed drop rates.
Fast answer
The answer before the background
For crazy defense heroes coins, prioritize the resource loop that gives the best return for your available Energy: clear the highest campaign stage you can finish reliably, claim its visible rewards, then use Scavenge for targeted materials and Gold. Do not chase an alleged best Gold level unless you have measured it on your own account; official sources do not provide a current drop-rate table. Claim daily chests, the Attendance Reward, Missions, and Clan Quest rewards before spending Gems, and reserve premium currency for Energy, genuinely scarce materials, or a clearly favorable limited offer.
Verified basics
Know what each resource is for
The game uses several overlapping resource systems. Gold Coins are the ordinary upgrade currency. Gems are the premium currency used for selected purchases and convenience features; Animoca describes Gems as Crazy Defense Heroes’ in-game premium currency, and the current store listings show Gem purchases and material packs. (animocabrands.com )
Materials are consumed when improving cards and equipment. Community reference data separates level-up materials from rank-up materials: equipment uses materials such as Copper, Coral, Fluorite, Hailstone, and Mercury, while other materials support towers, spells, and heroes. Treat that list as a reference rather than a guaranteed current drop table. (crazydefenseheroes.fandom.com )
Clan activity adds another progression stream. Official support lists Gold Coins, Diamonds, and Clan Tokens among Clan Quest row rewards, while the current store descriptions say clans can share materials, complete Clan Quests, and earn Clan Tokens. (outblaze.helpshift.com )
- Gold: spend mainly on upgrades that improve your active deck.
- Gems: save for high-value progression, Energy, or a scarce material—not routine impulse purchases.
- Materials: target the exact rarity and card type you need instead of hoarding unrelated items.
- Diamonds and Clan Tokens: treat them as Clan Quest rewards and spend them through the relevant clan systems when available.
| Resource | Best verified uses | Reliable places to check |
|---|---|---|
| Gold Coins | Card upgrades and some Merchant Shop purchases | Campaign play, Scavenge, chests, Missions, clan rewards |
| Gems | Premium purchases, Energy, selected resets or offers | Star rewards, chests, events, Offer Wall on Android, purchases |
| Upgrade materials | Leveling and ranking cards or equipment | Scavenge, Merchant Shop, campaign and event rewards |
| Clan Tokens / Diamonds | Clan-related progression and rewards | Clan Quest rows and league activity |
No official source reviewed gives a current, complete list of Gold per stage, Gem-per-Energy efficiency, or material drop rates. Claims that one named map is always the best farm should therefore be treated as player testing, not a universal rule.
Repeatable loop
The safest daily farming route
Start by collecting passive and scheduled rewards. Check the Daily Chest, 4-hour Chest, Video Chests, Attendance Reward, Missions, and any active event tasks. Official support specifically identifies these chest and mission systems as sources of useful items such as Automaton Charges and Energy Potions; the Attendance Reward supplies a reward cycle for regular play. (outblaze.helpshift.com )
Next, spend your natural Energy on campaign stages. Push new stages when you can do so without repeatedly failing; once progression stalls, replay the most rewarding stage that you can clear quickly and consistently. Campaign stages can provide cards, Gems, or Energy through star-based rewards, but those rewards are generally first-clear rewards rather than an infinite Gem farm. (crazydefenseheroes.fandom.com )
Then fill every available Scavenge slot. This is the clearest official recommendation for repeatable materials and Gold: Animoca’s support page says Scavenge helps obtain resources and Gold for upgrading cards. It does not grant extra experience, so use it for economy rather than Avatar leveling. (outblaze.helpshift.com )
Finish with Clan Quest participation if you belong to a clan. Row rewards include Gold Coins, Diamonds, and Clan Tokens, and completed clan tasks can reward all members. Battle Tickets replenish over time, so use them before they sit capped. (outblaze.helpshift.com )
- Log in and claim scheduled rewards before beginning battles.
- Use Energy on progression first; farm only after a new stage is inefficient or impossible.
- Keep Scavenge running while you are away from the game.
- Complete easy Missions even when their individual reward looks small—the value is in stacking several repeatable sources.
- Spend Clan Quest Battle Tickets regularly rather than waiting until the end of a season.
| Situation | Recommended action | Why |
|---|---|---|
| You can clear a new campaign stage | Advance and claim its visible star rewards | Permanent progression is usually more valuable than repeating an outdated stage |
| You are stuck on progression | Replay a fast, reliable stage and run Scavenge | This converts Energy and downtime into Gold and materials |
| You have unused Battle Tickets | Play Clan Quest arenas | Clan rows can pay Gold Coins, Diamonds, and Clan Tokens |
| You are low on Energy | Claim potions from chests and Missions before buying refills | Energy Potions are documented free sources |
Record the Energy cost, completion time, Gold gained, and useful material drops for five runs of any suspected farm. Compare Gold per Energy and Gold per minute separately; the fastest map is not always the most efficient one.
Premium currency
How to get Gems and spend them wisely
Campaign star rewards and chests are the first free sources to check. Community level references record Gems among possible campaign rewards, while official support confirms that chests and Missions can provide useful consumables. Because reward tables can change, inspect the reward preview in your current client before planning around a specific amount. (crazydefenseheroes.fandom.com )
On Android, the official Help Center documents an Offer Wall under Shop > Earn Gems. It pays Gems for completing third-party offers, and the support page says missing rewards may take 15 minutes to 48 hours before a support request is appropriate. Availability and offers can vary by platform, region, and account. (outblaze.helpshift.com )
Purchases are optional. The current US App Store listing includes Gem bundles, a daily Gem product, and upgrade-material packs. A support article describes one monthly pack as 400 Gems immediately plus 70 Gems per day for 30 days, but that article is old, so confirm the exact offer and price in the live shop before buying. (apps.apple.com )
For free-to-play players, the practical priority is usually Energy when it converts directly into campaign progress or a targeted Scavenge result. Use resets only when you know the reward is worth more than the Gem cost. Avoid spending premium currency on random upgrades while your main deck is still underdeveloped.
- Claim free rewards before considering a purchase.
- Use Gems for a specific bottleneck, not vague future value.
- Treat Offer Wall payouts as platform-dependent and keep proof of completion.
- Check the live shop because prices, bundles, and availability are not permanent.
| Gem spend | General value | Guidance |
|---|---|---|
| Energy refill | Potentially high when it enables progression or a targeted farm | Use when you have time to spend the Energy productively |
| Scavenge or Raid reset | Situational | Only reset after checking the exact reward |
| Random chest | Variable | Prefer discounted or clearly targeted offers |
| Convenience purchase | Low to moderate | Skip when the same resource is farmable without premium currency |
The sources confirm where Gems can come from, but not a current universal free-Gem-per-day total. Do not use old community totals as guarantees.
Targeted materials
Merchant Shop, Scavenge and event planning
Use Scavenge when you need a repeatable supply of ordinary upgrade resources and Gold. Use the Merchant Shop when you are missing a particular hard-to-find material or evolution item: official support describes it as a one-stop shop for upgrade and evolve materials, with inventory changing daily and purchases made with Gold or Gems. (outblaze.helpshift.com )
That makes the best purchasing rule simple: farm common materials, buy only the awkward bottleneck when the price is reasonable, and do not empty your Gem balance just because an item appears. Check the card or equipment upgrade screen first so you know the exact missing material and rarity.
Raids, weekly challenges, seasonal invasions, and special events are additional routes rather than guaranteed permanent farms. The current store listing confirms raids, weekly challenges, Clan Quests, and seasonal invasions as active game systems, but it does not specify their current reward quantities. (apps.apple.com )
Finally, keep duplicate cards and surplus materials until you understand their conversion or use. Official support notes that duplicate cards can have a resource benefit, but the exact conversion rules should be checked in the current client rather than assumed from an old guide. (outblaze.helpshift.com )
- Check the upgrade screen before farming so every run has a target.
- Use daily Merchant Shop refreshes to look for missing rank-up or evolution materials.
- Prioritize events when their reward directly matches your current bottleneck.
- Do not judge a route only by Gold; a slower run that drops the material you need may save more Energy overall.
| Need | First choice | Backup |
|---|---|---|
| Gold for upgrades | Campaign replay plus Scavenge | Chests, Missions, Clan Quest rows |
| Common level-up material | Scavenge | Campaign and event rewards |
| Rare or awkward evolution item | Merchant Shop check | Events, raids, or special chests |
| Gems | Star rewards, chests, Missions, Android Offer Wall | Optional purchases |
The route recommendations above combine verified system descriptions with practical efficiency advice. The efficiency advice is a recommendation, not an official guarantee of drop rates.
FAQ
Common questions
What is the best Gold farm?
There is no current official stage ranking or published Gold-per-Energy table. The safest answer is the highest campaign stage you can clear quickly and consistently, combined with active Scavenge slots and daily rewards. Measure five runs before committing to a route.
How do I get Diamonds?
Official Clan Quest support lists Diamonds among row rewards. Participate in Clan Quest arenas, contribute to clan tasks, and claim the completed row or league rewards available in your client. Exact quantities are not specified in the current support material. (outblaze.helpshift.com )
Are Gems and Diamonds the same currency?
Do not assume they are interchangeable. The support pages name Gold Coins, Diamonds, and Clan Tokens as Clan Quest rewards, while Animoca describes Gems as the game’s premium currency. They are presented as separate resources. (outblaze.helpshift.com )
Can I earn Gems without paying?
Yes, documented non-purchase routes include campaign star rewards, chests, events or Missions when they offer them, and the Android Offer Wall. The Offer Wall is platform-specific, and reward availability can vary. (crazydefenseheroes.fandom.com )
Does Scavenge give Avatar experience?
No. Official support says Scavenge helps provide resources and Gold for upgrading cards but does not provide extra experience. Use campaign battles when Avatar progression is the priority. (outblaze.helpshift.com )
Sources
What we checked
Official listings establish current availability and product facts. Community pages are used for mechanics and build history, then labeled separately.
- OfficialCrazy Defense Heroes — Google Play listing, updated January 20, 2026
- OfficialCrazy Defense Heroes — US App Store listing
- OfficialAnimoca Brands Help Center — Game Hot Topics
- OfficialAnimoca Brands Help Center — Merchant Shop and materials
- OfficialAnimoca Brands Help Center — Clan Quest rewards
- CommunityCrazy Defense Heroes Wiki — Materials