There is a new game in town:
Shape Shape
- Improves long-term concentration
- Improves focus
- Improves instincts
- The game is for free
Cons:
- Addictive!
Available on:
Google Play Store:
https://play.google.com/store/apps/details?id=com.OR.ShapeShape
App Store:
https://itunes.apple.com/us/app/shape-shape/id1413656284?ls=1&mt=8