Steel Towers are the strongest form of towers. They are the most expensive towers, but are also the strongest of all towers. They cost 3500, and have 1620 HP. These tower can withstand many attacks from Grocks, but uses up large amounts of gold just to build it. The repairs cost of a Steel Tower is 35 for each % HP lost.
"This tower is very expensive, but very durable."
Steel towers are used in similar vein to Iron Towers, as both can be used to keep watch over and defend crucial areas. Like iron towers, steel towers can also resist attacks from Magmagrocks and Diggrocks, making them useful to defend against them.