Using Secret Keys
As you progress through the story, you will learn to use Secret Keys during synthesis to apply various effects to items.
Secret Keys
Once you use a Secret Key, the synthesis effect on that key will be activated. Recipe level will increase if the corresponding conditions are met, and powerful effects will be added according to the level.
You can only use keys that carry synthesis effects.
Keys can be used after you add ingredients to all Core Ingredient Loops.
| Use Secret Key | |||
|---|---|---|---|
| PS4™ / PS5™ | Nintendo Switch™ | Steam® | |
| Keyboard & Mouse | Gamepad | ||
 / |
 |
F |  |
Key Selection Screen
The key bundle that appears during synthesis will include keys that are in the container.
Final Product Info
Displays the quantity, CC, range, etc. of the final product.
Values increased by using Secret Keys are shown in green.
Recipe Level
There are three levels for each recipe with different conditions.
If you use a Secret Key that matches the conditions, the recipe level will increase, and powerful effects will be added according to the level.
Effect List
A list of effects that will be applied to the final product.
Effects that can be added or upgraded by raising the recipe level are shown in green.
Selected Key
You can only select keys that carry synthesis effects.
Once you use a key, the synthesis effects of that key will be activated.