Lawful Evil

So... Emily downloaded some game from some iWin games online, Jane's Hotel Family Hero. For some reason it makes her computer loud. Not sure, but it sounds like it puts the various fans into overdrive mode. I thought the dishwasher was running or something. Its really loud.

It just seems bad to me that a program could stress the system that much... or does the program explicitly adjust the fan speed? Can programs access that through the OS?