I really enjoyed this movie! Husband did too until the end when he decided he hated it... ok so there were a few things that could have been better - the bad guy wasn't scary enough (according to my husband) and there was one scene in particular which was pretty unrealistic. In fact, the whole plot seemed a little weak - that a whole 'planet' could be reset with some sort of computer virus - they were so advanced they could cure cancer in 30 seconds yet their security systems were totally flawed. However, in a way it kinda reflects today's technology reliance - what would happen if the internet was hacked into/shut-down on a large scale. And I liked the geography theme with the over population and environmental destruction. But nah, couldn't give it 5 stars due to the plot weaknesses but, it is a movie and I did enjoy it, so I reckon it deserves 4 stars, let me know what you think!