Classroom Feud is a fully customizable game similar to The Family Feud game we all know. Full instructions on how to adjust questions and answers for your class are included as well as keynote files that will work with the latest version of Keynote as well as the older 09 version.
I have used this with ESL students and they have had a ball with it. It could easily work with almost any subject matter and with almost any age group. Requires Keynote.
In this file I have a Keynote file, a Keynote 09 file and a Powerpoint that I have exported but not tested.