Offline Mode is a feature added since Version 35.0. Instead of being forcefully required to update the game in order to play at all after the developers stop supporting an older client of Bloons TD 6, the player has the choice to play Bloons TD 6 without any online features, including no in-app purchases. It has much less content than the base game, but allows players to have a partial experience of the game without the inconvenience of regular updates or requiring any internet connection.