Ballochet

Ballochet pits you against girders and beams within intriguing cityscapes, and expects you to hit a target. You'll also need to negotiate crates that are in the way.

There are 25 screens, each of which gives you five different balls with which you can attempt to hit the target. There's a time limit, so you need take careful aim.

This may be the most addictive game that you have ever played.