You can choose the difficulty level in the game option menu (Easy, Normal, Hard).I think also that you can adjust the number of lives you have. I don't know about the replay value of the game because till yet I haven't managed to beat it.
One feature which adds a lot for me, is the fact that it saves the scores. That's a thing that not so many games do.
All in all I can recommend Chip Chap Kick, I like it!