Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Overheats

Do not buy this expansion pak. It overheats and crashes any game that makes use of it in around 30 minutes, every time. Playing games that do not use the expansion pak and you are fine, but if you play any game that uses it, the game will crash after 30 minutes and the pak itself will be scorching hot. Spend the $30 and find yourself an official nintendo expansion pak, be it on Amazon, eBay, or from a local seller.I opened this pak up to see if maybe there was a problem with the heatsink, or if it needed to be repasted, and the "heat sink" is just a piece of the aluminum casing screwed to the pcb pressing against the chip with a glob of paste in between them. It's a joke, and you shouldn't buy it.