|What did you use to check the temperature?|
What is the normal idle temperature?
What temperature after browsing online for half an hour?
How old is the laptop?
If your temperature is more normal most of the time, then the peak if after an hour or more of game playing, while high, is not really extreme. That said, it is best for the durability of your system to try to get the temperature down. If the laptop is not new, try blowing air from a compressed air can through the vents to clear out any build up of dust that may lower its cooling efficiency.
Post back the info for more details.
You have to be a little bit crazy to keep you from going insane.