# Rewards

## Water

<figure><img src="https://3266234917-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOigmPqgA5bsdcyu1rE4O%2Fuploads%2FnohYX2S4CiA2MKoAMcAz%2Fimage.png?alt=media&#x26;token=6f18bd63-1c8f-4258-9b05-85c81a164027" alt=""><figcaption><p>Water</p></figcaption></figure>

Water <img src="https://3266234917-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOigmPqgA5bsdcyu1rE4O%2Fuploads%2FGpQ9Q6xyNEr22lmaXeGn%2FSprite_Icon_Coin01.png?alt=media&#x26;token=76441e59-0614-4b5b-8107-8df0baa52ea4" alt="" data-size="line"> is the main currency in the game.  Its main use is to upgrade characters.

## Pass XP

<figure><img src="https://3266234917-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOigmPqgA5bsdcyu1rE4O%2Fuploads%2Fru0a3zuhanP9AmzTilf1%2FSprite_Icon_Coin03.png?alt=media&#x26;token=3c10b7e8-d94b-4dae-84db-ed6681acb5c9" alt=""><figcaption><p>Pass XP</p></figcaption></figure>

As you play the game, you will earn Pass XP (Experience).  When you have earned enough Pass XP, certain rewards will be unlocked each level.  The amount of Pass XP you have earned can be found on the Rewards Screen above the Premium Rewards.

## Mastery Points

<figure><img src="https://3266234917-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOigmPqgA5bsdcyu1rE4O%2Fuploads%2FNu7ll70z0FVpyyXMjPLC%2Fimage.png?alt=media&#x26;token=d5aa423b-f77b-473c-a3a3-65060f02cca9" alt=""><figcaption><p>Mastery Point</p></figcaption></figure>

Mastery Points are used to increase a character's Mastery Level — in other words, how leveled-up they are.

## Keys

<figure><img src="https://3266234917-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOigmPqgA5bsdcyu1rE4O%2Fuploads%2FRcdGNFLUPRxZvhAisd76%2Fimage.png?alt=media&#x26;token=6125e5d7-d2d2-4fce-a27d-44d42a872fad" alt=""><figcaption><p>Key</p></figcaption></figure>

Keys are used for unlocking new characters. Characters can be unlocked by spending Keys earned from the Bomber Pass and Trophy Rewards.
