My sister Smadar Goldstein, founder and partner of JETS, Jerusalem Ed Tech Solutions, always makes her own sedarim highly interactive. Past years have seen her kids putting red food coloring in a bathtub to replicate the plague of blood; building tents to mimic B'nei Yisrael's journey in the wilderness; ad adopting the Sephardic practice of beating the parents with scallions (parents do seem like wicked taskmasters to their children, no doubt).
Smadar shared with me the games she made for this year's seder, one of which is based on an integration unit I've given to elementary and high school students on how the plagues attack the Egyptian theological worldview. Below are Smadar's games as well as my integration unit:
The list of Egyptian gods and plagues comes from here. Much of the information in my "source sheet" makes use of Nahum Sarna's JPS Torah Commentary on Exodus.
Yossi Prager, Executive Director of AVICHAI, uses some of my information and points out additional ways to make your seder more interactive and meaningful on this eJewish Philanthropy blog post:
Reflections of a Parent-Educator and Amateur Egyptologist on Seder Night
Enjoy your seder and have a chag kasher v'sameach!