Remove me from your flist please. You know who you are.

I'm designing a game for fun (and profit?!) so I wanted to pick your brains a little if I may.

In your opinion, what makes a good game? Is it back-story, combat, skills, detail, graphics, customization, interaction with other players, quests, a combination of these things or something else entirely?

The more in-depth your answer, the more I'll love you.

You know the drill.