What is wrong with my iPod Touch?

Its a 3rd gen 32 gb. I charged it last night and I went to play a video game for about an hour and a half. I checked my ipod and it was really hot. I unplugged the charger and it wont turn on now. I was wondering if the battery was fried or something else. I already tried charging it again but it wont turn on. I also plugged it to my computer and it doesn't recognize it.