Its been getting some pretty bad reviews (around 6.5is) which is generaly worse than the original. I dont always listen to what the critics say but i thought the first one was good because of the novelty. This one doesnt have that and therefore i wont buy it.
Your choice. The only reason it got the review was the length. It's really short. They have made it so much better. Just rent it and play it cause it's still a good game.