Years 1-4 we had played out in 18h (according save game statistics), the playing time is therefore relatively neat, especially when you consider that there are still the free play and the campaign is only about 40% of the entire game ,
The story is relatively close to the movies, but is sometimes slightly modified.
The degree of difficulty is very neidrig, you can easily play the game (there are no Schweirigkeitsstufen).
You can not die, you can lose only collected coins ("Studs", with which I buy unlocked objects) when you "die" (actually not you die, but falls into the own Lego blocks and then resurfaces, recomposed) ,
One plays roughly by the history of the first four films, the scenes and locations are connected by a spirit who know a way to the next task. It is, however, completely free and can occasionally also solve other puzzles. Later you can all level again play all things to collect.
In addition, you can move freely in Hogwarts and yet very very discover many things and do after the story. It wait at least I think 50 students waiting to be rescued by Harry, Ron or Hermione, the other one gathers golden stones and much more.
The game is very entertaining, absolutely non-violent and can be played super couple.
For the two-player mode, Lego has come up with a very dynamic system, if both players are close together, so there is only one screen, the players apart, so you have a split screen, which is very dynamic and is rarely confusing. In these cases, you just go back to approximately the same place and have a good overview is back.
From me, therefore, a strong buy recommendation to all adventure and Harry Potter fans. Action fans will be rather disappointed, but can then also something else playing.