I was so looking forward to this movie. But, I must say, I was a bit disappointed after watching it.
Chitti as usual stole the show. Nila was a breath of fresh air. Effects were ok. But, I can't help but feel the camera positions could have been changed, as the 3D effect, for most of the time, felt like 2D. Honest!
For the character of Pakshiraj, the director could have looked inside Kollywood. Two way of acting, it was a drawback. Bollywood and Kollywood had different way of acting. For someone so used to the Kollywood actors, Akshay Kumar's acting felt like overacting.
The content and the message were the only good thing in the movie.
Overall, 2.0 is a science fictional Ghost movie.
I'd give 2 on 5 for this movie. That too only for the good message it gives.