Half-Life series has done okay for itself on MC. But I also find myself enjoying a lot of games with mediocre reviews, Dark Messiah of Might & Magic springs to mind.
End of 2016 hardware sales:
Wii U: 15 million. PS4: 54 million. One: 30 million. 3DS: 64.8 million. PSVita: 15.2 million.