Codenames is a super fun board game.
Spymasters know the secret identities of 25 agents. Their teammates know the agents only by their codenames.
Spymasters take turns giving one-word clues
A clue may relate to multiple words on the table
The field operatives try to guess which words their spymaster meant
When a field operative touches a word, the spymaster reveals its secret identity
If the field operatives guess correctly, they may continue guessing, until they run out of ideas for the given clue or until they hit a wrong person
Then it is the other team's turn to give a clue and guess
The first team to contact all their agents wins the game