Good concept, poorly executed.

It is neither dumb nor smart enough to be fun, and spends way too much time with its boring human characters.

There are moments in this movie where the great movie it could've been peek out... They're fleeting, here, but they're worth savoring, and they happen often enough to make it worth your while.

Yes, absolutely, there is fun to be had, as well as many, many things to go boom, all amid an atmospheric urban jungle.