Some detailed route and drop claims come from community-maintained references rather than official Com2uS documentation. The game has been available for many years, and regional storefront behavior, platform support, or shop contents may differ.
Fast answer
The answer before the background
For early progress, finish main and side quests, collect every chest, and sell unused equipment after keeping upgrades for your party. For repeatable money, choose the highest-density area you can clear quickly, run a short loop, return to town, sell the haul, restock only what you used, and repeat. Do not treat gems, jewels, or crystals as ordinary gold: gems are a premium resource, while crystals and similar items support crafting and equipment upgrades. There is no well-supported official evidence for a single universally best gold area or a reliable free diamond farm, so avoid guides that promise fixed rates or guaranteed drops.
Currencies
Know what each resource does before farming
The normal money system uses copper, silver, and gold denominations. Community quest records list rewards in those denominations, including copper from early bounty and story objectives. In practice, coins pay for equipment, consumables, recipes, fusion-machine work, and other routine expenses. Keep a reserve because high-level upgrades and combinations can cost substantially more than early purchases.
Gems are different. They are used for premium shop functions and can unlock additional mercenary slots. Community references document a cost of 10 gems for each extra slot beyond the initial allowance, but they do not establish a dependable repeatable gameplay route that produces gems at a fixed rate. If a guide calls these items diamonds, it is usually using a different name for the same premium-resource concept; verify the icon and shop description in your build before spending.
Crystals are normally materials. Examples recorded in fusion requirements include Spell Crystal and Palpitant Crystal, alongside Mithril, Magic Branch, Chaos Scale, and Transcendent Flower. They should be stored for equipment work rather than sold automatically. Lower-tier jewels are also materials for jewel fusion and socket creation, and applying a jewel is irreversible.
- Coins: everyday purchases and upgrade fees.
- Gems: premium purchases and some permanent account or mercenary conveniences.
- Crystals and crafting parts: equipment combinations and progression.
- Jewels: socketed stat bonuses and tier combinations.
| Resource | Best early use | Farming priority |
|---|---|---|
| Copper, silver, gold | Supplies, equipment, recipes, and upgrade fees | High; spend carefully |
| Gems | Premium shop items and mercenary-slot expansion | Save; no verified universal free loop |
| Crystals and rare parts | Fusion and chaos-related equipment work | Keep useful drops |
| Jewels | Sockets and permanent stat bonuses | Keep, combine selectively |
The game is not documented consistently across modern guides. “Gold,” “coins,” and “money” generally refer to the normal coin denominations. “Gems” or “diamonds” may refer to the premium shop resource, while “crystals” can mean several different upgrade materials. Use the item name shown in your inventory rather than relying on a guide’s shorthand.
Early game
The safest route to more money
Questing is the most dependable early source because rewards are visible before completion and do not depend entirely on random drops. Clear the main story, accept available side quests in each town, and check bounty-hunter objectives when they become available. Community quest records show that these tasks can award experience, coins, equipment, and special items, making them more efficient than wandering through weak enemies solely for cash.
Collect everything that is safe to reach. Chests and boss encounters can provide equipment, quest items, jewels, and other valuable loot. Keep upgrades for the active party, but sell duplicate or clearly weaker gear once you have compared its stats. A full inventory reduces the value of a farming trip because you may have to abandon drops or return early.
Use this loop during normal progression: accept all nearby quests, clear the route toward the objective, open chests, defeat marked bosses when they are on the way, return to town, equip improvements, sell the rest, and restock only the potions and scrolls you actually consumed. This converts story travel into a steady income stream without requiring a special exploit or an unverified drop-rate claim.
- Finish nearby side quests before moving to the next region.
- Open chests even when the immediate reward is not equipment; materials and scrolls have future value.
- Compare equipment before selling it, especially weapons with better attributes or sockets.
- Do not buy every shop upgrade if a quest reward will replace it shortly.
Repeatable farming
A practical best-gold loop
There is no reliably sourced official answer naming one best gold farm for every class and stage. The strongest general recommendation is therefore efficiency-based: farm the highest-level area where your party kills normal enemies quickly, survives without constant potion use, and has a short path between combat, chests, and a town or merchant.
Start by timing one complete circuit. Record the coins picked up, the number of equipment drops, and the potions used. If a harder zone takes twice as long but gives only slightly better loot, the easier route is the better money farm. Prioritize enemy density and low travel time over enemy level alone. Area names recommended by old community posts may be useful for rare chest or mercenary hunting, but they should not be presented as guaranteed coin or gem locations.
A strong loop is: enter the route, defeat every nearby group, open accessible chests, ignore low-value detours, return when inventory is nearly full, sell common gear, keep crafting materials and useful jewels, then repeat. If the route becomes expensive because of deaths or consumables, lower the difficulty of the circuit or improve equipment before continuing.
- Measure coins and sellable loot per minute, not just coins per enemy.
- Use area-of-effect skills or a durable mercenary setup to reduce downtime.
- Keep rare materials, jewels, sockets, and quest items separate from vendor trash.
- Stop farming a route when its enemies no longer die quickly or its repairs and potions erase the profit.
Available references do not provide a complete, official table of coin drops by map, enemy, class, or difficulty. Claims that one named location always gives the highest gold should be treated as player preference unless your own testing confirms the result.
Materials
How to farm crystals, jewels, and crafting parts
Material farming is best combined with money farming. Normal enemies and chests can supply equipment and miscellaneous drops while you follow a route. Keep a storage buffer of jewels and rare components instead of selling them just because they have no immediate use. The fusion machine uses several tiers of jewels, and socket creation requires a Novice Jewel plus Sharp Claw according to community documentation.
For late progression, plan around the recipe you are working toward. Chaos combinations are documented with Magic Branch, Spell Crystal, Mithril, and Chaos Scale. Epic Chaos combinations use Transcendent Flower, Palpitant Crystal, Mithril, and Chaos Scale. Because these recipes also require coins and can change equipment performance randomly, farm the materials and money first; do not spend your entire reserve on an attempt you cannot afford to repeat.
The best material route is usually the area where the needed item can drop while you also receive usable equipment and coins. If a component has a named boss or dungeon source in your reference, farm that source only after confirming the item name matches your version. Do not assume that every item called a crystal is interchangeable.
- Store jewels until you know which equipment will receive them; application cannot be reversed.
- Farm rare components alongside normal loot instead of running a low-value area for one material alone.
- Budget both the materials and the coin fee before using the fusion machine.
- Use chests and bosses for targeted rare-loot attempts, but expect random results.
Premium resources
Gems, diamonds, and mercenary progression
The dependable way to obtain premium resources is not clearly documented in the available official material. The store listing confirms that the game contains optional paid items, while community references describe a Gem Shop and gem costs for extra mercenary slots. That supports treating gems as scarce: spend them on a permanent benefit you will use for the whole playthrough, not on a temporary purchase that can be replaced by ordinary drops.
For free progression, rely on quests, combat, chests, and boss rewards rather than assuming that normal farming produces a predictable gem income. Some community discussions mention improved chests and special areas for mercenary-related rewards, but those claims concern rare loot or emblems and should not be confused with a guaranteed gem or diamond farm.
- Save premium currency until you understand the mercenary and shop systems.
- Do not sell or discard rare-looking items before checking whether they are crafting materials.
- Treat community gem rates as anecdotal unless tested in your own build.
FAQ
Common questions
How do I get coins in Inotia 4?
Complete main, side, and bounty-hunter quests; defeat enemies; open chests; and sell equipment you do not need. For repeatable farming, use a fast, dense route and measure profit after potion and repair costs.
How do I get diamonds or gems?
The available evidence confirms gems as a premium resource, but it does not establish a universal repeatable free route or fixed drop rate. Check quest and chest rewards in your build, save the resource, and avoid guides promising guaranteed farming results.
Are crystals the same as gems?
No. Crystals such as Spell Crystal and Palpitant Crystal are crafting or equipment-upgrade materials. Gems are associated with premium shop functions and some mercenary-slot expansion.
What is the best gold farm?
Use the fastest area that gives worthwhile equipment and coin drops without heavy potion use. There is no well-supported official ranking of one best map for every class, level, and platform.
Should I sell jewels and rare materials for money?
Usually no. Jewels can be combined or socketed, and rare components appear in fusion recipes. Sell common duplicate equipment first, then keep a reserve of upgrade materials.
Sources
What we checked
Official listings establish current availability and product facts. Community pages are used for mechanics and build history, then labeled separately.
- OfficialCom2uS official Google Play listing for Inotia 4
- CommunityCommunity quest reference with coin rewards and bounty objectives
- CommunityCommunity fusion-machine reference with jewel and crystal requirements
- CommunityCommunity jewel reference covering tiers, sockets, and irreversible application
- CommunityCommunity equipment and boss-drop reference