You don't want to keep playing the same game. If you do, they won't credit you. I usually switch between Crusher, Drop3, and Rock 'n' Ball. Sometimes I might do Hungry Snake and Crazy Taxi too. (you can click screenshots to see full size)
I recommend you get at least over 3000 points for these 3 games if you want them to count. After I finish the game, I usually submit my score as a guest. When I just clicked on "Go Back To Games" before, I never got credited.
After you play 2 games, you should be awarded with your 2 SB. YAY! Remember you can get 10 SB a day by doing this. I never got over 10 SB before.
My personal experience with games:
I did join a paid game tournament once, but I never did again because they recorded my score down as 0! I don't recommend you join the game tournaments. I always play for free. Plus there are a lot of hackers in the games which causes the whole tournament to be unfair. If you take a look at the high scores on the score boards, you'll know what I'm talking about. Those high scores are impossible to get with normal game play.
