First there was a game of 'whiplash' where the chariot riders would tie bungee's around their waists, then ride past each other and have a tug-o-war, where someone eventually would fly through the air.
After all that fun, we convoyed them out to a Post Apocalyptic wasteland and they battled.
Check out my friend Simon's Videos of the carnage:
http://www.youtube.com/profile?user=midnightmass
http://www.youtube.com/watch?v=YHX6Fre_FDM