I bought this without hesitation seven minutes after the e-mail hit my inbox this morning. It was a few hours before I had a chance to play it but it was worth the wait. I have been looking forward to this game for a while, and was only concerned that it would be too much like the original. I didn't need to worry. There are plenty of new enemies and twists that make it worth buying and playing. It is definitely a sequal to the first game but the new challenges make it fun. I have gotten through the first 3 levels on easy and look forward to seeing what else the game has to offer!