This game keeps popping up on the Hot Toy lists for 2012!
Right now you can grab the Perplexus Maze Game by PlaSmart, Inc.  for $14.94 on Amazon.
It’s about $2 cheaper than I can find it anywhere else since you can get FREE shipping with Amazon Prime or Super Saver Shipping.
- A maze game where players must maneuver a small marble around challenging barriers inside a transparent sphere
- Provides a three dimensional experience
- Shift, flip, and twist the sphere to guide the marble
- Entertaining, educational, and great for fine motor skills and hand-eye coordination
- No set-up, clean-up or batteries
They also have the Perplexus Rookie  for $14.30 if you are looking for something a bit easier.
As always remember this is Amazon- the prices can change at any moment!