Simple puzzle game that can be educational!
This is a nice little game, simple and easy to play.
It would also be a nice game for children, as it teaches about adding up and money, which is a valuable skill!
The concept is so simple and yet it's highly addictive! I was playing for a good 20-25 minutes before I gave up!
The game does ned a bit of variety though. For example, a "bonus round" for each say, 5 levels? Also a nice touch might be to have a choice of playing pieces, either the numbers you have, or images of real coins? This could be not only british, but you could get say american money (cents, quarters, dollars, ect...) as an option?
You already have th coding, changing the images wouldn't be too hard I'm sure...
Otherwise, a nice well made game!