Good question, Warrior!
When in overtime, the first player to score one point wins.
Overtime starts after 2 minutes and 30 seconds of battle and only if the score of the match is tied.
In this game, each main defense (small bunker or trenches) you destroy from your opponent awards you with 1 point, and if an enemy bunker is destroyed, it awards the player with 3 points and the match is instantly over.
Thrilling, isn't it?
See you on the battlefield! ;)
Over.