Whack a mole to get a bonus threshold

whenever you have hit more than 20~30 moles (or 80~120 points) before the time runs out, you should be given a bonus that every hit thereafter is 45 points (tickets), hitting any cats at that period would not end up deducting more points compared to normal.

this is to balance with bug bytes where you might earn even more (1.5k tickets?) if you get another player to play with you.