And one of the most popular games on steam is a game where you kick around a ball with RC cars. Another is a game where a team of counter-terrorists and terrorists fight with no context, made by Valve itself. A hit game that is claimed to be partly behind the modern roguelite resurgence is a game where you fly forward across several systems, to escape the dastardly rebels and save the federation, and that's all the story you're given. In what has been hailed as one of the best shooters in years, all you need to know about the plot (although there is more to it) is that you kill demons from hell. Gameplay over story, every time.
I think Carmack wins this one.