CoffeewithGames shows data for Monster Hunter Tri and says, "Monster Hunter Tri has now moved into 3rd place overall on the Wii, as the most played Wii game by hours averaged "Per person" on the Nintendo Channel."
CwG also says in another section, "Super Mario Galaxy's average play-time hours "Per person" are 30 Hrs. 40 Min.
Super Mario Galaxy 2's average play-time hours "Per person" are 20 Hrs. 53 Min.
If you missed the picture above, Monster Hunter Tri's average play-time hours "Per person" are 61 Hrs. 15 Min."
CwG also has a video from a Great Jaggi Arena Hunt(embedded below), and says, "This week, I am including a video of a Great Jaggi Arena Hunt, we did on July 4.
Does the Great Jaggi remain "great" by defeating us, or do we take it down?"
Full data breakdown at link...