This game asks you to solve one-step equations.  I know you can solve most of these mentally.  Remember, however, you'll have to show your work on the assessment!

Basketball version:

http://www.math-play.com/math-basketball-one-step-equations/math-basketball-one-step-equations.html

Soccer version:

http://www.math-play.com/soccer-math-one-step-equations-game/one-step-equations-game.html