You left out the most important factor of all: content. Imagine a game with the best graphics, music, story, and gameplay. It's over after 1 hour. Now the game is really disappointing. On the other hand if you have a super long game without much variety then that gets old too. Content is actually what people are looking for when they buy a game, both quantity and quality of content.
(You also left out challenge, but content is even more important.)
Content and challenge is under gameplay
"I think people should define the word crap" - Kirby007
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