Very important to add a forfeit button in builder base. Sometimes you just know you messed up your attack or the enemy is purposefully waiting till the last second to attack to troll, both of the situations can be very frustrating. You have to sit there and wait, often times burning your clocktower boost. If you are busy and can’t log in often, this can be very detrimental to the overall economics of the builder base, which are already a challenge to begin with. It shouldn’t cancel the war as soon as you forfeit, because I understand some people need to do challenges and clan games, but there needs to be some way to accept your defeat and move on.