Instruct: Classify a given review as either positive or negative.
Query: Not even worth $4.99

This game doesn't work properly. I can play it, but the whole time there are streaks of colour across the top 1/4 of the screen that kind of make me want to have a seizure. I don't think it's my computer, but just for completeness, I'm using the newest (2012) Macbook air: 1.8 GHz i5, 4 Gb RAM, Intel HD Graphics 4000 384 MB, OS X.8. I would like my $5 back.