Cryptarium, also known as "Cryptography," involves matching pairs or groups with similar symbols using click-and-click gameplay. Players usually start out in the center area (the top left corner) holding a coin to represent their initial position. The game progresses by clicking on cards that match each others crypto-symbol.
The player who clicks matches another card and gets points for it, while others lose if they dont get matched or are clicked against. Crypta is fun because the gameplay involves matching symbols in pairs with similar meanings (crypto-symbols).