OK so first thing: Is this the CPU or GPU you are talking about?

I had a problem where my GPU was hitting 130 Celsius and needless to say that was not good. I realized that with my nVidia graphics card I had a very cheap fan on it with almost no heat sinks so I bought a new fan. Installed it and it immediately dropped to 50-60 Celsius idle and maxed at 80 C while gaming.

Another thing you might want to do is buy a can of compressed air, unplug your computer, open the case and go to town cleaning every area you can reach inside there. Have the vacuum handy to scoop it all up.

I have never had a problem where a game was to blame for my crappy equipment failing. Run a Pinto on the Autobahn at top speed for 2 hours and if the engine freezes up is it the fault of the Autobahn?