exchange boxs - logic games
Start a pile of messy box, through the exchange of positions to completely destroy them
Slide on the box you want to move (up, down, left, right), vertical or horizontal,
Every three or more than three adjacent, it will be eliminated, the above box will fall to make up after the elimination of the gap.
Each of the designated number of mobile, not more, not less, more than 300 hurdles waiting for you to challenge!