If you think of it as its own game its pretty good, but if you think of it as a sequel... it just looks like they haven't even tried. You can't not go back to it, you're a Big Daddy, yet for the sake of damage reduction you may aswell be a Splicer. I wouldn't consider it a waste of money, since £21 isn't too bad, but you just can't help but wonder if they thought no-one would notice...