One of the most intricate elements in *Atelier Yumia: The Alchemist of Memories & the Envisioned Land* is the Synthesis mechanic, which is integral to nearly every aspect of the game. From gathering resources to crafting weapons, everything revolves around it. Here’s a comprehensive guide to mastering this mechanic.

Synthesis Types in Atelier Yumia

In *Atelier Yumia*, there are three distinct types of Synthesis:

• Regular Synthesis: Performed at an Alchemist’s altar, this is used for crafting weapons, armor, battle accessories, magical items, and materials necessary for Synthesis. You can access this mechanic at the Atelier, which you unlock early in the game, and it's available whenever you return to the Atelier. Additionally, in areas where you can build—such as cleared manabound zones and campsites—you can construct a Simple Altar, which also enables regular Synthesis.
• Simple Synthesis: Accessible through the radial menu outside of battle, this allows you to craft essential items like bandages, gauntlets for ziplines, and repair kits for treasure chests and ladders, provided you have the required resources.
• Building Synthesis: Available through the radial menu on specific plots of land, this isn't labeled as Synthesis, but Yumia is essentially Synthesizing storage chests and wall hangings. The story may refer to it as Synthesis, so keep that in mind to avoid confusion.

**Related: Complete Fields of Mistria Caldarus Romance Guide: How To Unlock, Events, Best Gifts**

How to Synthesize Equipment in Atelier Yumia

The regular Synthesis conducted at altars is the most complex aspect of the mechanic. To craft an item like a gun staff for Yumia, you first need to find the recipe during your explorations. You can also upgrade existing recipes at a Recipe Recall Station using particles from mana fountains. Here's how to proceed at an Alchemist’s altar:

1. Choose the type of gun staff you want to create.
2. Select Synthesis Skills if they are unlocked in your skill tree.
3. Choose the initial Alchemy Core to build upon:
   • Effects Alchemy Core: Enhances the selected skills.
   • Quality Alchemy Core: Boosts the quality level of the finished item.
   • Trait Alchemy Core: Increases the number of Trait Crystal slots available for socketing.
4. Fill the slots of each Alchemy Core with the resources you’ve gathered.
5. Collect mana fragments to further enhance the item's quality.
6. Complete the Synthesis process to create the item.

To craft powerful items early in the game, unlock Synthesis Skills from the Synthesis section of the skill tree as soon as possible. These skills provide flat damage and quality boosts to your items and allow you to duplicate them, thereby conserving resources.

You can also enhance the item's quality by adding resources to all three Alchemy Cores. To do this, press the left or right bumper while filling the slots in a specific core. Collecting the mana fragments—the yellow sparkles around an Alchemy Core—for all three cores will significantly strengthen your item, a step you should take unless you're crafting a quest-specific item.

Don't overlook the importance of using resources that match the element type of specific slots, which you can identify by the blue outline around them. You can organize your resources in the submenu to prioritize higher-quality ones, though you might want to focus on effects instead.

If you find the Synthesis mechanic too complex, opt for the auto-Synthesis option after selecting your Synthesis Skills. The game excels at creating the best possible item, allowing you to tackle even the final boss on Normal difficulty with relative ease.

That's everything you need to know to maximize the Synthesis mechanic in *Atelier Yumia*.

*Atelier Yumia: The Alchemist of Memories & the Envisioned Land is available now.*