Here are a few games that will help you with adding fractions!

This link will take you directly to the board game Adding Fractions Board Game for two players!.
This is a two player game, so feel free to grab a friend and play with them. Practice adding fractions, and see which player can get from start to finish first!

This link will take you to Sheppard Software's Fruit Splat Fraction Addition. Adding Fractions!
Once you click the link, select LEVEL 3A, which says, Add Fractions with unlike Denominators. This will take you directly to the adding fractions game.

Have fun!