The spymaster (original) or cluemaster (Disney) gives a clue to their team members to direct them to one or more card belonging to the team, as designated by this game’s selected grid. What makes this hard is that you’re only allowed to give a single word clue and the number of cards you’re hinting at. That doesn’t sound too hard, right? But it’s also subject to the other player’s interpretation… the cluemaster isn’t allowed to expand on that word at all during the game. And the more correct guesses your team can get on a turn, the better your odds of winning.
On the sample image, you can see a grid in the upper left corner. My color is red, the opposing team is blue, yellow are innocent bystanders… but black is the game-ending troublemaker. In the original, that’s the assassin card; for Disney, it’s “Game-Over.” A possible clue for blue would be “singing,” referring to The Lion King, where they’re clearly singing Hakuna Matata, but it could also refer to Snow White (a red card) and Rapunzel (a yellow card). You must choose your clues carefully.