Wow!! leaderboard bonus is a great idea . You must actually give points according to the time in which the game was finished because a guy may win 20 games in 130 sec and the other guy may win 21 in 150 sec . In this case the guy who has won 20 games is more skillful and must be given sme extra points like if he finished game in 130 sec he must be given 5 points extra that is 10 sec = 1 point.
Thank You!!
I am thinking to add 3 different difficulties.. 130 Second Round, 150 Second Round and 180 Second Round. If you do finish the game in 130. You get 5 Satoshi as a reward, if you do in 150 then you get 4 satoshi. if you do it in 180 you get 3 satoshis. I am thinking over this..