Ok, I have implemented a Timer now. The Bonus per level is 250 at the start. But every minute passed reduces this amount by 5. This seems to have changed the game play some how, I now find that I am trying to chase the Timer now to get that bonus, which is good. Hopefully this hasn't slowed things down at all, or it won't be too noticeable. Let me know what you think. I decided not to move the top game display and added the timer to the bottom area, not sure if I like it there or if it should be at the bottom right side of the screen or possible at the top?