Gameplay trumps all in almost every case. The graphics can suck and the story can be almost non-existent or not the best, but fantastic gameplay usually more than makes up for it.
If I'm playing a Mario platformer, I'm expecting very little in the way of the story. Heck, I expect little in storytelling in any platformer.
So to me gameplay alone can usually make a game great. Sound and Music are pretty important as well. I would say graphics and story usually isn't as important.
Lifetime Sales Predictions
Switch: 151 million (was 73, then 96, then 113 million, then 125 million, then 144 million)
PS5: 115 million (was 105 million) Xbox Series S/X: 57 million (was 60 million, then 67 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima