These are Card decks used for Kickstarter projects: Some Kickstarter projects themselves might utilize card decks as part of their rewards or functionalities.

For example:

• Educational projects: A project teaching financial literacy might offer flashcards or game decks as rewards.

• Board game projects: The project creators might provide prototypes or early versions of their board game using card decks.

• Creative projects: An artist might offer limited edition sets of trading cards featuring their artwork.
  In these cases, the "card decks" are specific to the individual project and not a general category.

• Oracle & Tarot Card Decks: There are always many live kickstarter project offering Oracle and Tarot decks and many other creative variations around mindfulness and affirmation to name a couple.

Kickstarter project are all about collaboration and planning. You need a great product, but building an audience before launch will give oyu more of chance to start with a bang. Deckible can help