Greetings,
Materials:
A deck of playing cards (Daiso has some usually)
Quarter sheets of paper (1 per student)
Pens for everyone
Play time:
Varies: Intro Dialogue -5 min
Explanation of rules - 5-10 min
Each round - 10-15 min
Premise:
Joker has escaped the asylum. He will be attending an auction in disguise. It's the students job to find out who is the joker. Each student will have a playing card, and you can set a time limit on finding the one with the joker, who is a known liar. (It's all explained in the ppt. except the time limit part is up to you.)
I hope I can help make your teaching lives a little easier, and more fun.
