CorsixTH is a clone of Theme Hospital. In the game, the player must build and operate a hospital. There are different rooms you can build. These are to diagnose the patient and to treat the illness. The game revolves around buying and placing rooms (or facilities) in a hospital, and hiring doctors, nurses, handymen and receptionists to operate it. Some rooms are fundamentally required for the running of the hospital, such as GP's offices, Staff Rooms, and Toilets, while others provide optional services (such as General Diagnosis rooms, Scanner Rooms and X-Rays). Some rooms are dedicated to the treatment of a specific illness, and a number of rooms contain machinery that has to be repaired occasionally.