Forging

Forging is a mechanic in Etrian Odyssey III: The Drowned City, Etrian Odyssey IV: Legends of the Titan, Etrian Odyssey V: Beyond the Myth and Etrian Odyssey Nexus where the player can upgrade and customize their weapons.

Etrian Odyssey III: The Drowned City and Etrian Odyssey IV: Legends of the Titan

Forging is conducted at the item shop, and first requires the player to have a weapon with empty forge slots in possession. Then, the player selects one of the possible Forge icons available to them (provided they have the appropriate Hammer key item) and applies it to the empty forge slot. Forging one icon will require the same number of materials required to make the weapon, on top of a fraction of the weapon's Ental cost (This Ental cost was removed in Etrian Odyssey IV: Legends of the Titan).

Some weapons come with pre-determined forge icons that cannot be overwritten. The player can change the forge icon they have applied to the weapon by overwriting it with a new one, though this will cost the same as forging one additional time and will not refund any spent materials.

Armors also have forge icons of their own, but they cannot be modified.

In Etrian Odyssey III: The Drowned City, selling a weapon that has been forged will give a higher-than-normal sale price to recoup some of the Ental costs for forging.

Forge icons in Etrian Odyssey III: The Drowned City

• - Increases physical damage by 3% per icon. Affects both physical skills and normal attacks.
• - Increases hit rate by 3 per icon.
• - Increases critical hit rate by 3% per icon. Cap of 24% (8 icons) across all equipment.
• - Increases action speed by 2 per icon. Accuracy and evasion are not affected.
• - Increases the corresponding stat by 1 per icon.
• - Imbues the weapon with a bonus 10% damage of the corresponding element per icon, affecting only normal attacks and follow-up attacks.
  • If a weapon is given multiple different elemental forges, the right-most element (and its duplicates) override all other elemental forges.
  • The skills Fire Arms, Freeze Arms, Shock Arms and the Blaze Oil, Freeze Oil and Shock Oil items will override elemental forges on a weapon.
  • On armors and accessories, each icon instead gives a 10% resistance to its corresponding element.
• Ailment/Bind forge icons give a 6% infliction rate of the corresponding ailment/bind on normal attacks only. Additional copies of that forge increase the infliction rate by 3%.
  • - Instant death and petrify forges start at 4% infliction rate instead, with each additional icon adding 2%.
  • - Plague and poison damage is always half the weapon's ATK stat. Additional icons will not increase the ailment damage.
  • If a weapon is given multiple ailment/bind forges, each normal attack that connects will cause the game to check for each corresponding ailment/bind icon. If a success is applied for multiple ailments, only the ailment highest on the hierarchy (left-most on the row of ailments on the codex) will apply and override all else. An enemy can be stunned in addition to existing ailments.
  • On armors and accessories, each icon instead gives a 10% resistance to its corresponding ailment/bind.
• - Increases Limit gain per action by 1 per icon. This can exceed the usual cap of 15 Limit per action.
• - Increases the corresponding stat by 5% per icon. Accumulates additively per icon across all equipment.
• - These icons appear only on armors and accessories and provide a 10% resistance to its corresponding damage type per icon.

Etrian Odyssey V: Beyond the Myth and Etrian Odyssey Nexus

In these games, the forging system leans more into upgrading the weapon as opposed to customizing it. Most weapons that are made with materials from the labyrinth can be forged, but several weapons in Nexus come at their full potential from purchase and cannot be forged.

Forging consumes the materials used to make the weapon or one Ingot. Every time a weapon is forged, its "bonus" goes up by 1, increasing its ATK and MAT while unlocking and improving its additional effect. Most weapons have a passive stat bonus from forging, but some weapons, usually made from FOE or boss drops, carry an active skill that is only accessible from a +1 version or better. Forging a weapon caps out at +5, and a level 5 weapon skill will have a higher TP cost in exchange for a significant power boost from level 4.

Once a weapon has reached +5, you can recycle it for Shards. Ten shards merge into an Ingot of the matching color. Most weapons are recycled for Bronze Shards. Weapons made from FOE drops or rare materials recycle for Silver Shards. Weapons made from conditional drops or materials from deep in the labyrinth recycle for Gold Shards. A Bronze Ingot can be used to forge a weapon once. Silver Ingots forge a weapon three stages. Gold Ingots forge a weapon all five stages in a single use.

Stat Bonuses

HP

Weapon	+1	+2	+3	+4	+5
↑	+3	+4	+6	+8	+12
↑↑	+6	+8	+12	+16	+20
↑↑↑	+16	+20	+25	+30	+40

TP

Weapon	+1	+2	+3	+4	+5
↑	+4	+7	+10	+13	+18
↑↑	+10	+13	+18	+24	+30
↑↑↑	+24	+30	+36	+45	+60

STR/INT/AGI

Weapon	+1	+2	+3	+4	+5
↑	+1	+2	+3	+4	+6
↑↑	+3	+4	+6	+8	+10
↑↑↑	+8	+10	+12	+15	+20

VIT/WIS/LUC

Weapon	+1	+2	+3	+4	+5
↑	+2	+3	+4	+6	+9
↑↑	+4	+6	+9	+12	+15
↑↑↑	+12	+15	+18	+23	+30

V • T • E	Etrian Odyssey III: The Drowned City (Category • Gallery)
Publisher/Developer: Atlus • Console: Nintendo DS
Locations	Armoroad Aman's Inn • Napier's Firm • Butterfly Bistro • Explorers Guild • Inver Port • Via Senatus • Forest Entrance Click to toggle hidden content: Deep City Twinkling Tavern • Napier's Branch • Celestial Palace • Forest Entrance
	Yggdrasil Labyrinth Waterfall Wood • Undersea Grotto • Molten Caves • Abyssal Shrine • Porcelain Forest Click to toggle hidden content: Cyclopean Haunt
	South Sea Skandalia Lighthouse • Trade City of Batavia • Ayutthaya Port • Tortuga Island • Giant's Ruins • Trade City of Ugarit Click to toggle hidden content: North Sea Marine City of Sheba • Dark Forest • Trade City of Damavand • Tower of Victory • Trade City of Aeaea • Aerial Forest
Classes	Arbalist • Buccaneer • Farmer • Gladiator • Hoplite • Monk • Ninja • Prince/Princess • Wildling • Zodiac Click to toggle hidden content: Shogun • Yggdroid
Characters	Edie Napier • Missy • Flowdia • Gutrune • Kujura • Olympia • Agata • Hypatia • Lindworm • Wealh • Hiiragi & Agamede Click to toggle hidden content: Abyssal King • Angie • Eldest One
Items	Weapons • Armor • Accessories • Consumables • Materials
Lists	Monsters • Missions • Quests • Maps
Mechanics	Forging • Limit Skills • Seafaring • Subclasses