Moats can be built starting at level 5 town hall.
What are moats you ask?
Moats are basically tiles that cannot be destroyed* (do not count towards percentage damage) that slow enemies down. Enemies do not avoid them as they do walls. It slows down troops by half, giving more time for defenses to attack. 10 can be built at 5, 15 at 6, and so on.
BUT
Shark Riders (a new troop that is a merman riding a shark) can be deployed on moats. (If they are deployed anywhere else they die) Piranha Traps, essentially water skeleton traps, are activated by sharks. CC troops can also move through moats, with the speed lowered also. Moats cost 100 gold, but take 30 min to build. They cannot be upgraded. *Another troop (Flamers) automatically die when they touch moats. however, they destroy the moat in the process. Flamers have an extremely high damage output however, they only love for 10 seconds or until they lose all hit points. Hope you like it!

