Other rooms are the rooms not included in any category of the market and consist of rooms already built when you start the game.
Overview
The other rooms are the Throne Room which is the most important part of your castle and its main purpose is to unlock new rooms and upgrades, the Barracks where fighters are stationed in order to fight battles as well as to defend your castle from attacks, and the Arsenal which is used to set up your castle defenses and upgrade them.
Rooms
Throne Room | Barracks | Arsenal |