The winner is determined by which player has the most number of points at the end of the game. Score is determined by three different methods.
Default[]
2 points are gained for every enemy kill, and lose a point for every loss on your side. It's default as it provides a balance between your kills and losses.
Genocide[]
1 point for every enemy kill. Your losses don't matter any more, just make sure that you take as many lives as possible.
Survivor[]
Start with 100 points and lose points as people in your territory die. Ideal for those who want to play a game that is based more on defence than offence.