I'm hoping to make some upgrades to the Match Three game such as:

• Levels (There would be less matching symbol's that will make it harder).
• Timer (Display a timer bar that will count down until game over or if user gets a certain amount of matching symbols or points the timer bar would fill in complete until it gets full for next level).
• Sound effects.
• Score keeper.

It seems like this should be relatively easy but it complex OOP code for this upgrades. If anyone has suggestions for ways to make this or where to find an example of something similar, I'd be grateful.