The number of games I played with friends which ended in global thermonuclear war (aka flipping over the game board) instead of victory.
We ended up making a rule that the combatant which used nukes first - lost.
BadchileYou never had to nuke me. You'd just beat me. I might have won a game or two in the many years we played. Didn't matter if I was letting Western Civilization fall or if I undoing the glorious plans of the Axis; it was always a blast.