If you don't want to know how the game works, look away.
Now here's how the game works.
Spades are used to dig out the drt.
Swords are used to kill enemies
Diamonds are currency for the shop.
Hearts are your health. You can use it for anything, but if you reach 0, you lose.
Press X to open the shop. There, you will find two new things.
The boxes with the plus in them are upgrades. They let you play 1 more card per upgrade.
The plus-es are wildcards. They count as every suit.
I hope you found this guide helpful.
-Toffee