The activity log is kind of wonky but I tabulated the hours played of some of my most played Wii U games. Tank! Tank! Tank! 268 hours Lego City Undercover 267 Nintendoland 253 hours Mario Kart 8 214 hours Super Mario 3D World 175 hours New SMBU 135 hours My copy of Lego City broke too or I think that would be #1. Tank tank tank I didn't even buy the full game just part of it digitally. I am sure Netflix youtube and the web browser are used a ton too. This is for me and my kids but it seems like I have gotten a pretty good value.