Think of co-op Minesweeper, but with words, and you're somewhere in the realm of what it's like to play Codenames. Players form two teams, each with a team of spies hidden among a grid of word cards. Only one player on each team knows the location of their spies, and must give one-word clues to their teammates to help them uncover all their spies before the other team. This means getting creative with clues to link together as many words with spies as possible, all with a single word. So "long" might point you towards 'worm', 'wait' and 'rope'. Be careful, as any spies from the other team you accidentally reveal will progress them towards victory - and there's also an assassin who will make you lose the whole game.
Czech Games Edition