Cart Surfer!
Personally, this is my favorite game! It gets me around 700 coins each game. How do I do it? First, you HAVE to get all the cart surfer stamps. If you need help, talk to me using the contact me section. I'd love to help! Getting every single stamp doubles the amount of coins you get. One stamp is pretty hard to earn, and its getting 300 coins. To reach the maximum score, alternate between two tricks: Back flip(down arrow and then space-bar;100 points) and side spin(side arrow plus space-bar; 80 points). Be sure to alternate between the two, as the same trick twice in a row cuts the points received in half.
Ice Fishing!
My second favorite game. It can get you a lot of coins, but takes awhile to play. If you are a member, buy the rod. This allows you to catch the gray fish as well as yellow. Gray fish=8 coins ea. Yellow fish=4 coins ea. Also, you need to catch the legendary fish named Mullet. He is worth 100 coins! When you catch around 60 fish, you should see him swimming in the background. When you see him, catch a yellow fish, but do not reel it in. Use this fish as bait.