I found this movie to be rather dull and boring. There were a couple cute scenes, but the jokes are about as old as the source material. If you like a simple comedy without deep humor, this might be for you.
We follow some cave men being forced from their valley by people from the bronze age. They fight back by challenging the champion football (soccer) team to a game. Winner gets the valley. From there, you can pretty much guess the rest. Almost scene for scene. There is some charm to the movie, but it is really lacking, even for a children's movie.
There's not really much to say about the movie. I found almost all of the jokes to be obvious, the characters are two dimensional (in spite of the claymation), and the story is silly. Some people are suckers for animated movies, so I'm sure people will like it, but it's one of the worst kid's movies I've seen in a while. If you can skip it, I'd suggest skipping it.