How the game works
In Spot It (Dobble), any two cards share exactly one matching symbol. This is based on finite projective planes. A deck can be generated with n symbols per card, producing n² - n + 1 cards.
- Each card has exactly 8 symbols in the classic game.
- Any pair of cards has one and only one shared symbol.
- Your custom deck can be smaller for easier printing.
Start building
Use the deck builder to choose symbols per card, generate cards, save in browser storage, and print/export.
Open Deck Builder