It's not awful, but there are at least a few things wrong with it:
1. If you've got a "run" (I don't know what they are called, but like "8-7-6-5-4" etc) you can move the top card or the whole run but not just part of it like you can in other versions (like just moving just the 6-5-4 in the above example).
2. No in-game mute button.
3. Like others have said, it is just another version of solitaire with nothing to make it stand out.