Surrender! is a new option in the next Bloons Tower Defense game. It allows you to give up and surrender to the bloons. If you do this, the bloons will be victorious and you will be forced to watch their celebration of victory. Then, whenever you try to play the game again, you will just see the bloons doing a victory dance. There will be no way to undo the Surrender! you have agreed to. This would not be in versions you buy. You will have to confirm this 3 times before you can surrender.