# Upgrade System

Upgrade Feature Guide The Upgrade feature allows players to optimize profits and increase their $ZENI earnings, even with less fortunate pack openings or when managing unused cards in their inventory.

<mark style="color:orange;">**Steps to Upgrade:**</mark>

1. **Select Warriors as materials**

&#x20;Choose Warriors from your inventory:&#x20;

* Warriors currently equipped must be unequipped before being used as materials.&#x20;
* Required quantity: Ensure you select the exact number of Warriors required to proceed to the next step.

2. **Review success rate (Upgrade Rate)**&#x20;

* The success rate depends on the rarity and current level of the Warriors. Each upgrade attempt may have a different success rate, so carefully consider these rates to optimize your resources.

3. **Upgrade Fee**

* Upgrade costs are paid in $SAIYAN tokens.&#x20;
* The fee varies based on the rarity and level of the card being upgraded.

4. **Upgrade Results**&#x20;

* If successful:&#x20;

Your card will reach a new level, significantly boosting its $ZENI earnings.&#x20;

* If failed:

&#x20;All materials, including the Warriors and $SAIYAN tokens used in the upgrade attempt, will be lost. Strategize wisely to maximize your efficiency and dominate your journey!