A game to help you master the pen tool
As most designers know, the pen tool is one of the most difficult tools to master in Photoshop and Illustrator. The Bézier Game is an online tool to to help you master the anchors, curves and nodes of the pen tool. Developed by Mark Makay for Method of Action The Bézier Game is a fun and easy way to get accustomed to one of the finer points (and curves) of graphic design.
Source: The Bézier Game