Of all the Lego games I've played (And I've played plenty of them growing up) I must say that I think this game is the weakest of the bunch. I'm not saying it's not playable but it's not as entertaining as the other titles. A kid might not think much of it, but for me the game reflected poorly. With cutscenes just being clips ripped from the movie and the actual pace of the game being really slow.
For those who have seen the Lego Movie you'd know that the movie is very upbeat and fast in pace. There's nearly always something going on. Which really works against the game when it includes movie clips that are played in a much much faster pace only to cut to slow paced gameplay.
Another thing they did which bothers me is that they didn't try to think up new funny things that would be exclusive for the game, but they instead try to imitate the humor of the game poorly. Oh and you know the song Everything is awesome which was only played like 2 times in the movie? It's over used allot in this movie and by the time you get through the game you'll be as tired of it as 'Let it go' from Frozen,
Visually i really like how the game looks though, they have added a nice lighting and look to the game, that's all i can find positive.
So in it's entirety i don't find the game horrible, it just feels boring and at many points lazy and uninspired, which is sad compared to their other titles which have really been improving if you ask me.