Cards in our game are associated with balls. They are required to unlock new balls and upgrade available ones.
Once you've collected enough cards of a certain ball, you can upgrade the ball in your Arsenal.
If a ball is ready for a level up, you will see a green progress bar with an arrow under that ball in your Arsenal. This means that you can level up that ball.
- Common balls have blue cards. When a new common ball is unlocked, its level is 1.
- Rare balls have gold cards. When a new rare ball is unlocked, its level is 3.
- Epic balls have violet cards. When a new epic ball is unlocked, its level is 5.