It was in a smaller area but I moved it into the open. It was really warm, and the air was too.
It's the fat, loud one, and it's a refurb I've had for around a year & a half.
After it began shutting down after a few minutes, I looked online on the ps3 and it was fine for over an hr & didn't shut off. Then I tried the game and it lasted for 45 mins or so before shutting down again. I've hardly played it for months but we watched a few movies recently.
Thanks guys!