Today only, September 7, 2011, Billy Lavoie has Tangled (iTunes Link) in the iTunes App Store for FREE for a limited time.

Tangled is a simple yet mind bending puzzle game. The goal of the game is to “untangle” the lines and make sure they don’t overlap. Touch the dots and drag the lines to untangle them. You can now play the famous Planarity / Untangle game on your iPhone or iPod Touch.

The 30 carefully designed puzzles provide a smooth learning curve. Once you’ve finished all 30, you can have unlimited fun with the randomly generated puzzles.