Instruct: Classify the given Amazon review as either positive or negative.
Query: junk, but fun if it stays working

bought for my 3 year old son. he absolutely loved it, but toy quickly broke. not durable at all. bought second considering that 1st could be fluke, but NO, 2nd broke also just after days of use, changed batteries in both trains in front and back, also remote--did nothing. very disappointed, as well as my son :(. not worth the money!!!!!