This is a game that I created to get learners to practice speaking English. This game can last for 2 hours (or take less time if you use fewer cards).
Basically, the more clues you have to give, the fewer points your team gets. So the 25-point clues are quite vague, and the 5-point clues make the answer pretty obvious!
I have been using this with adult-ESL learners (a GREAT Friday-afternoon activity) for about 20 years, and they LOVE it!