an addictive brain puzzle game. it is free:
https://market.android.com/details?id=com.riv3r.makezero
video:
http://www.youtube.com/watch?v=xG0Vv1aBvF4
https://market.android.com/details?id=com.riv3r.makezero
video:
http://www.youtube.com/watch?v=xG0Vv1aBvF4