Item Upgrader

Client-side item upgrade roulette for Valheim. Version 0.4.0, compiled against supplied Valheim 1.0.16 libraries. The custom menu is Russian; item names use the game's language.

Features

• Choose a stake and a desired reward, including their quantities.
• View the success chance and spin a smooth five-second wheel.
• Rebalanced metal and Deep North values, with equipment limits by category and biome.
• Quality bonuses capped at ×2: a four-quality item uses ×1 / ×1.3333 / ×1.6667 / ×2.
• Fast scrolling, searchable catalog and reusable UI cards.
• Claim large rewards in batches when inventory space is limited.

The mod runs locally. A server installation is not required; odds and outcomes are calculated on the client.

Installation and updating

Install with Thunderstore Mod Manager or r2modman, or copy BepInEx/plugins/ItemUpgrader into the game's BepInEx/plugins folder. BepInEx is required and declared as a dependency.

Close the game before updating. Replace the old DLL and keep only one copy. Preserve your cfg, ItemValues.json and AutomaticValues.json. Untouched automatic prices recalculate; manual prices and zero exclusions remain. The first 0.4.0 rebuild backs up the old price files. The plugin ID is valheim.itemupgrader.

How to play

1. Press F8 to open the menu; Esc closes it.
2. Select an unequipped inventory item and the quantity to spend.
3. Select the desired reward and its quantity.
4. Check the displayed chance and press УЛУЧШИТЬ.
5. On success, press ЗАБРАТЬ. On failure, the selected stake is consumed.

The selected stake is consumed on every attempt, including successes. Rewards are created at quality 1 with full durability. Closing the menu does not cancel a started attempt. Inventory and pending rewards use normal character saving and logout.

Configuration and balance

Settings: BepInEx/config/valheim.itemupgrader.cfg. Prices and the generated runtime catalog: BepInEx/config/ItemUpgrader.

Let r = stake value / total reward value. For a more expensive reward, chance = min(MaximumChance, ReturnRate × r^UpgradeChanceExponent); otherwise chance = min(MaximumChance, ReturnRate × r). There is no artificial minimum chance.

Quality increases value by at most ×2, and wear discounts it further. Crafting markup is applied once to the raw acquisition chain; equipment has an exchange factor and category/biome limit. Embedded upgrade idols do not inflate the value of finished gear.

Edit individual prices in ItemValues.json, then click ОБНОВИТЬ ЦЕНЫ. Zero disables an item; deleting its entry restores automatic calculation. Explicit custom prices override automatic category limits; the quality cap still applies. Preserve AutomaticValues.json when updating.

Русский

Нажми F8, выбери ставку и желаемую награду, задай количество и нажми УЛУЧШИТЬ. При успехе награду можно забрать, при проигрыше ставка сгорает. В 0.4.0 металлы стали дороже, экипировка получила пределы ценности, а бонус качества ограничен ×2.

Для обновления закрой игру, замени DLL и сохрани настройки и оба файла цен. Серверная установка не нужна.

Compilation and automated checks passed; version 0.4.0 still needs an in-game test.

Credits and license

Created with assistance from OpenAI Codex. No game or BepInEx assemblies are bundled.

MIT License

Copyright (c) 2026 Item Upgrader contributors

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Changelog / История изменений

0.6.4 · Interface polish / Доработка интерфейса

• Slim quantity sliders with no pale outline; fixed stretched handles and improved padding.
• More space between the wheel and UPGRADE.
• Red Russian/English recommendation in NO LIMITS help.
• Updated page description and two current in-game screenshots.
• Тонкие ползунки без светлой обводки, исправленные размеры и отступы, больше места у кнопки улучшения и красная рекомендация в подсказке.

0.6.3 · Quick selection / Быстрый подбор

• Added ×2 / ×4 / ×8 and 30% / 50% / 70% random reward picks.
• Added synchronized stake/reward quantity sliders.
• Added actual multiplier/odds feedback; picks respect discoveries and quantity limits.
• Кнопки подбора случайной цели по ценности или шансу, два ползунка количества и отображение фактического результата подбора.

0.6.2 · Balanced defaults / Ограничения и шанс

• Default chance cap reduced to 90%.
• Combined the catalog and stack overrides into NO LIMITS, off by default.
• Added ? hover help and improved wheel/footer spacing.
• Предел успеха 90%, общий переключатель «Без ограничений» и подробная подсказка.