How did the gamemakers control the enviroment to keep the games exciting?

Answer:
Since the games are held in a large arena the gamemakers could easily control the environment. They probably start preparations after a hunger games and figure out what kind of setting they want to have and the environment in the arena is ready by the next hunger games. The hovercrafts can drop stuff to make things interesting, like the fire that came out of nowhere.
First answer by ID1653366469. Last edit by Annawalls93. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 36 [recommend question].