Try Gravity Pods. Now, there's an addictive game.
Gravity Pods Flash Puzzle Game on Bass10
[addendum]
I am up to Level 40 on Gravity Pods! Awesome game. Now, THIS is addictive.
There is a cannon and a target; the cannon can be trained by angle up or down. There are "suns" which have gravity.
There are "anti-suns" which have repelling gravity.
Sometimes you can only change the cannon's angle.
Sometimes you can place and move your own suns and anti-suns.
The problems keep getting kinkier, but so far, it has never taken me more than 5 minutes to solve a problem.
Love this game!!!!!!!!!!!!!!!!!!!!!!!