Dobble, is a simple pattern recognition game in which players try to find an image shown on two cards.

Each card features different symbols, with the symbols varying in size from one card to the next. Any two cards have exactly one symbol in common. For the basic game, reveal one card, then another. Whoever spots the symbol in common on both cards claims the first card, then another card is revealed for players to search, and so on. Whoever has collected the most cards when the deck runs out wins!

Rules for different games are included with dobble, each an observation game with a speed element