Firstly, I am not at all religious, and though I am not fully aware of the changes made to the original story, I can't say it differed much from the story I remember being taught as a child. In my mind, this film does it exactly as it sets out to do, entertain whilst delivering one of the most well-known and influential biblical stories of all time.
The animation is top notch, a mixture of both CGI and hand-drawn, whilst the characters all have a beautifully chiselled design I have come to know and love from Dreamworks animation. The voice actors all do a top-notch job and I can say there is not one song in this film that I don't adore! All the songs and music just fit perfectly.
I first saw this film when I was about ten years old, a year or so after it came out and I thoroughly enjoyed it. Now, as an older teen, I still do and can see no reason why other children or adults wouldn't. Perhaps younger children under the age of eight might find the graphical interpretation of the plagues distressing but as a ten year old I certainly didn't and doubt I would have had I been even younger.
Perhaps what I find most attractive about this film is the fact that although it depicts a religious story, it in no way screams for the watcher to either believe or disbelieve the story it portrays, instead it merely points them to the book of Exodus if they want to read it for themselves.
Whatever your beliefs this is a fantastic film all round.