Once a coalition reaches half the normal points necessary for a win in a 100/500 player game, that coalition is rewarded as winners and leaves the game. The provinces the winning coalition controlled are blocked out. No one can own them, but remaining players can move through them. The remaining players then play for the second win which will end the game.
Two half wins will inspire new strategies for completing the 100/500 player games.
The player creating the 100/500 player game can choose whether it has one full win or two half wins.