1- The game is D.M.T but I think it's censored to tell it here.
2- In this "game" you have different character as Pete Sampras (P.Scott), A.Roddick (A.Richmond) etc..
So in this game if you want to pay for the characters to use it in Online Mode, with the different surface it will be more expensive.
3- In TE it's different, there is only 1
Character, and you can edit him whatever you want.
So if you want to use all surface in online mode with demo, it's like the game was free.
But I just want to see peoples having the Demo Version, if they can see the different surface against the one who has the Full Version.
Well, I wish you understand what I have just write