Fellow ninjas, just how proficient are you with shuriken -- throwing stars? Here's how to find out.
Destroy targets by throwing shuriken, but take care: The targets are moving or protected by walls as well as wooden and metallic obstacles. You'll need to bounce the stars off of metallic obstacles, but avoid wooden ones, in which the shuriken merely lodge. It's a game of strategy and logic, and the 169 levels will keep you occupied for a long time.
You can purchase new capabilities for your shuriken or new levels for $1.49 to $4.99. There's also a free editor for building your own levels.