If you are a fan of physics or those laser pointing games, you owe it to yourself to give Optia a try.  Unlike other laser games I’ve tried, this one adds some twists to really make things interesting.  Besides having regular mirrors like some other games, it adds one-way mirrors that you can shoot through from one direction but reflect with the other, “gems” that will split your beam into two, and the 100 levels get increasingly harder as you go through them.

There is not a lot of description necessary for “reflect the light to hit all the targets” that need to be covered.  The rules are just that simple.  Successfully implementing them though the wide array of levels is a challenge though.

This $1.99 game has a free lite version if you want to check out the concept.  And I really recommend that you do that.  My only suggestions would be the addition of OpenFeint leader boards that utilize time-based scoring for each level, and the ability for users to create and contribute levels.  I think this inter-activity would add a lot to a game that already excels in this genre.