* The arena's environment: The Gamemakers decide the environment and its hazards. This includes things like poisonous plants, deadly animals, unpredictable weather, and even changing landscapes.
* The "gifts" and resources: They can send in supplies to aid tributes, or manipulate the gifts to make them more dangerous or difficult to use. This can create chaos and turn allies against each other.
* The "events" and "challenges": The Gamemakers set up traps, challenges, and even release deadly creatures to force tributes to fight and kill each other.
* The "rules" and "twists": The Gamemakers are in charge of creating the rules of the Games, and they can change them at any moment, often to their own amusement or to create more drama.
While it's hard to define a single "catastrophe" that they create, their overall manipulation of the Games is the biggest and most dangerous catastrophe, causing the deaths of countless tributes and fostering a brutal and terrifying environment for the contestants.