Currency

There are two main types of currency in the game, Silver and Coins. They can both be used and earned in various ways across the game involving completing levels and leveling up your cats.

Silver
Silver is by far the easier currency to get ahold of in the game. It can be earned by battling other cats during travel or completing levels. When you lose a battle, you also lose silver. During earlier stages of the game, one would only lose around 0-30 silver, but as the player progresses they will find that they lose much more silver, especially in sections such as Sky and Space.

Silver can be used to level up cats, but besides that, there isn't much more you can use it for. Occasionally, cats will gift it to the player in various interactions on the home screen.

Appearance
It is pictured as a silver fishbone with a small face on the head. It appears to be sparkling.

Coins
Coins are much harder to acquire. They can be earned almost only by battling other cats, and are rarely given to the player. Like silver, they can also be earned via cat interaction, but are very hard to get.

They can be used to buy cats from the store, to get a random cat, or to upgrade the Deck's storage. This last option is by far the best one, as there's no point in saving up coins to buy cats when you have no room for them in the first place.

Appearance
Coins have a simple appearance of a shiny, flat golden coin with the outline of a cat's head carved into it.