Steam

To be honest, I'd probably call it "awesome" and be a bit envious. That must pretty much be a state where whatever mood you're in, there's always going to be something you want to play, like someone with an amazing collection of vinyl records, or bookcases full of literature & poetry.

Those are some pretty big numbers on hours played too, so it's not like you've just played each thing for an hour and then chucked it.

I only feel mine's out of control because of the relatively small amount of time I have to play these days, and the amount of unplayed games - I can play a new game every week for about three years, but actually I just stick another ten hours into "Crusader Truck Manager Fortress Rally Tactics III", on average.