In a nice addition to last week's reveal of what Wii owner's play, Kotaku has compiled a list using the Nintendo Channel's play data on how much time is spent with M-rated games.
Call of Duty: World at War steals the most play time, with the average user unloading 34:28 hours into it, no doubt due to online play. Out of the top 5 games, 3 are open-world, with The Godfather: Blackhand Edition, Scarface: The World Is Yours and No More Heroes nabbing 2, 3 and 5 respectively. Madworld comes in 8th with an average of 6:08 hours of playtime, which means people on average beat it and leave it.
Absent from the top 10 are Resident Evil 4 and Manhunt 2, whose statistics for whatever reason aren't registered by the channel. That's too bad, because surely one of them would have bumped off Alone in the Dark.
For the full list, jump on over to Kotaku.