One of the most intricate aspects of *Atelier Yumia: The Alchemist of Memories & the Envisioned Land* is the Synthesis mechanic, which is intricately woven into virtually every facet of the game. From collecting resources to crafting weapons, everything revolves around Synthesis. Here’s how to maximize its potential.
Synthesis Types in Atelier Yumia

In *Atelier Yumia*, there are three distinct types of Synthesis:
- Regular Synthesis conducted at an Alchemist’s altar.
- Simple Synthesis accessible from the radial menu.
- Building Synthesis available in building mode.
To craft weapons, armor, battle accessories, magical items, and materials needed for Synthesis, you must use the regular Synthesis mechanic, which is only available at an Alchemist’s altar. Early in the game, you unlock the Atelier, allowing you to return and Synthesize at any time. Additionally, in areas where construction is possible—such as cleared manabound zones and campsites—you can build a Simple Altar to perform regular Synthesis.
Simple Synthesis can be accessed outside of battle through the radial menu, enabling you to craft items like bandages, zipline gauntlets, and various repair kits for treasure chests, ladders, and more, provided you have the necessary resources.
Building mode, also accessed via the radial menu, is available on specific plots of land. Although not officially labeled as Synthesis, Yumia is indeed Synthesizing storage chests and wall hangings. The game's narrative often refers to this process as Synthesis, so keep that in mind.
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How to Synthesize Equipment in Atelier Yumia

The most complex aspect of Synthesis is regular Synthesis performed at altars. For example, to craft a gun staff for Yumia, you first need to discover the recipe during your explorations. You can also enhance your existing gun staff recipes using particles found at mana fountains at a Recipe Recall Station. Once you have the recipe, follow these steps at an Alchemist’s altar:
- Choose the type of gun staff you want to create.
- Select Synthesis Skills (if available in your skill tree).
- Choose the initial Alchemy Core to build upon:
- Effects Alchemy Core enhances the selected skills.
- Quality Alchemy Core improves the quality level of the finished item.
- Trait Alchemy Core increases the number of Trait Crystal slots available.
- Fill the slots of each Alchemy Core with your collected resources.
- Collect mana fragments to further boost the item's quality.
- Complete the Synthesis process to craft the item.
To create powerful items early in the game, unlock Synthesis Skills from the Synthesis section of the skill tree as soon as possible. These skills provide boosts to damage and quality, and allow for item duplication, saving resources.
To maximize item quality, add resources to all three Alchemy Cores. Use the left or right bumper to navigate between cores while filling slots. Collecting mana fragments—those yellow sparkles around an Alchemy Core—for all three cores significantly enhances the item's strength. This is usually advisable, except when crafting quest-specific items.
When selecting resources, prioritize those matching the element type of the slot, identifiable by a blue outline. You can organize resources in the submenu to select higher-quality items first, although you might want to focus on effects instead.
If the complexity of Synthesis overwhelms you, opt for the auto-Synthesis feature after selecting your Synthesis Skills. The game efficiently crafts the best possible item, allowing you to tackle the final boss on Normal difficulty without much hassle.
That’s everything you need to know to leverage the Synthesis mechanic in *Atelier Yumia* to its fullest potential.
*Atelier Yumia: The Alchemist of Memories & the Envisioned Land* is available now.