https://www.warzone.com/MultiPlayer?GameID=100691711 YEARS, 10 MONTHS, 9 DAYS.
(yes, near the end we were taking our turns 3 months at a time. It kind of just happened over time and we kept the tradition up near the end)
At turn 29 I was down to 9 armies on the board with 2 territories
Some fun facts from the change log on 7/29/2009 (the game was still running on Silverlight, not even Flash yet):
2009-07-29: New features for beta phase 8:
- You can now zoom and pan around the map.
- Quad Earth map added. This is a very large map, be sure to zoom in.
- The Chat panel now shows turn numbers with links to history.
- The My Games page now shows pending team chat in addition to public chat.
Hopefully this game will go down as the longest game ever. I'm curious what the longest running current game is now?