Yes. The simplest thing that you can do is insert hyperlinks and/or
buttons. With this, you someone can click on some text or a button (or
any object in PowerPoint) and jump to another slide in the presentation.
Beyond that, you can have buttons trigger animations, jump to web pages
or other documents, or with scripting allow users to type something and
base what happens on what is typed. The links at this entry from the PPT
FAQ should get you started:
Creating games in PowerPoint
http://www.rdpslides.com/pptfaq/FAQ00616.htm
--David
--
David M. Marcovitz
Microsoft PowerPoint MVP
Director of Graduate Programs in Educational Technology
Loyola College in Maryland
Author of _Powerful PowerPoint for Educators_
http://www.loyola.edu/education/PowerfulPowerPoint/