Service Towers are an often overlooked element of the game that was introduced with the The Notum Wars expansion. Service towers are a type of 'pet' that is totaly stationary but acts as a vacinity sentry and offers a pulsing vacinity protective buff and heal program. The damage on the towers, at any level, is nothing that will impress a veteran player, but can be very useful to those people without expansions beyond The Notum Wars as many Froobs do.