What makes a great game to you?

[pianomaster42]

There are many different things that can come together to make a great game. Story and music are probably the most important to me. After that comes complexity of gameplay. I don't want something with a sheer learning cliff, but I don't want something with no potential, either. I love games where you can eventually go in depth into every little tiny detail (with explanation as to how it works), a perfect example of this being Disgaea.