At what sales point do you see a game a success?

[ManusJustus]

There are all kinds of factors one should consider, sales, profit, artisitc and fun-value.

And they arent the same around the board.  For instance, if a third party sold 500,000 on Wii that would be a huge success, but if a Nintedo game sold 500,000 that would be a horrible failure.