Building destruction
When a Planet is attacked there is a Chance for a level of one or more buildings to be destroyed. This can happen only if the Attacker has DeathStar/Titan/Queen Nox in their fleet. This is so because they are the ships that possess the Skill Detonation, which makes building destruction possible. Whether a building level (or a level of more than one building) is destroyed, is determined by the amount and type of ships, which poses the Detonation skill, in the Attacker’s fleet.