The Control Room is where the main events are controlled and headed, during the Hunger Games season, such as the chariot rides, the interviews, and the training scores. The Hunger Games are operated by the Gamemakers from this room. From here they monitor each tribute's status and location, and decide who to focus on for the cameras. They can alter the arena environment by changing the time of day as it appears to the tributes, adding muttations, starting natural disasters, etc.The Control Room is seen in The Hunger Games film at various points before and during the 74th Hunger Games, most commonly when Head Gamemaker, Seneca Crane directs his subordinates.
In the film, the Control Room consists of a large holographic view of the arena, with two semicircles of seated Gamemakers and tables on both sides. They have holographic screens in front of them through which they view and control the arena. The room has blue, futuristic lighting.
It was in the control room, which the gamemakers creating the wolf-mutts that played a part in ending Cato's life. Each mutt had been genetically altered to resemble a fallen tribute (e.g. Rue's mutt was the smallest with a brown, frizzy coat, whilst Thresh's was tall and well-built with an ability to jump higher than the other mutts.) and it was a unnamed female gamemaker that showed senca crane the mutt.