User Whiterabbit-uk

and would add even more replay value

This would enable users to make their own levels which could b shared, much like Reflexive arcade did with Ricochet infinity.

This would add an extra dimension to the game and give it much more replayability

these would give the user more incentive to replay the game. The secret levels could be unlocked via various mechanisms, for example a cumulative score above a certain number, or keepig more than one ball in play for x amount of time...

or maybe a cumulative score of x number of balls over time could unlock a new secret level.

make each additional license much cheaper than the single licence. Say $5 for each extra license.