EquivalentExchange

EquivalentExchange is a total gameplay overhaul for Valheim inspired by Minecraft's Equivalent Exchange. Every item has an EMC value, and EMC becomes the universal currency: you craft, build, repair and travel by paying EMC instead of gathering and spending resources.

Compatibility warning

This is not a small add-on. The mod rewrites the core economy — crafting costs, building costs, repairs, food upkeep, loot and portal travel. It is likely incompatible with other global overhaul mods that also change crafting, loot tables or progression, and combining them can cause broken prices, duplicated rewards or blocked recipes. Test on a backup world and use a clean mod profile, ideally with only cosmetic, UI or small quality-of-life mods.

What changes

• Universal currency — item values are calculated from vanilla recipes and trade values; coins and valuables convert at their in-game price.
• Crafting with EMC — the craft button is split in two: the vanilla one spends resources, the second one ("x1 (N EMC)") spends EMC and keeps the materials. Ingredients are still required — EMC pays for the craft, it does not replace materials.
• Building with EMC — construction pieces are paid for with EMC instead of resources. The EMC price is shown next to the piece name (red when the balance is insufficient). Pressing Ctrl while the hammer menu is active toggles between paying EMC (default) and paying vanilla resources; the mode resets to EMC whenever the hammer is re-equipped.
• Repair with EMC — once a minute the Repair block restores 1% of a random damaged item's max durability for 1% of the intact item's value (registry + upgrades, rounded up, min 1 EMC). Equipped gear is no longer auto-repaired — put it into the block. Full repair costs about the item's full value.
• Slower gear wear — durability drain from hits, blocks, tools, torches and armor damage defaults to 25% of vanilla, tunable per category in the Durability config section (0 disables wear). Max durability is unchanged, so prices and saves are unaffected.
• Transmutation cell — three tabs under your inventory (Feed, Repair, EMC Extraction) slide out as 2×2 drawers with vanilla drag & drop, stack split and Ctrl-click quick move. Opening a tab closes an open chest, opening a chest retracts the drawers, and the chest panel sits below the tabs.
• EMC on slots — while a block panel is open, items in your inventory, hotbar and the block grids show their remaining EMC value on the slot.
• Food upkeep — the Feeding block consumes one food item per minute for 1 EMC, keeping vanilla food buffs running.
• Fuel with EMC — when there is no fuel in the inventory, fuel consumers (smelter, blast furnace, coal kiln, spinning wheel, campfire, fire pit, torch) accept EMC instead, priced at the registry price of one fuel unit. The device hover hint warns that the next contribution will spend EMC. Toggled by the Fuel.Enabled config entry (default on).
• Portal travel — cost scales with distance and carried weight.
• Mob loot — biome- and star-based chances for gear drops with partial durability. Any gear lying on the ground is marked with a faint, slowly rotating light beam (Epic Loot style) in the neon color of the item's own biome tier — a bronze sword glows BlackForest emerald even in Meadows. Beam opacity is tunable (Drops.BeamOpacityPercent).
• Character-bound balance — EMC is stored on your character and shown in the inventory, HUD and console.
• Localization — all player-facing texts follow the game language (English and Russian are bundled); switching the game language updates them on the fly.

Installation

1. Install BepInExPack Valheim via your mod manager (Thunderstore/Hexium).
2. Install EquivalentExchange with the same manager, or unpack the ZIP into BepInEx/plugins/EquivalentExchange/.
3. For multiplayer, the mod is required on both client and server.

No additional libraries required.

Configuration

BepInEx/config/equivalentexchange.cfg — coin exchange rate, portal prices, drop chances, gear wear, repair price, beam opacity, fuel payment and custom EMC values for individual items.

Feedback

Questions, bug reports and price-balance suggestions are welcome at [email protected].