Uncommon puzzle game
Old fashioned bubble sort game. This is also known as ball puzzle or a variant of Hanoi tower puzzle game.
Our main mission is moving all the ball (you can call it stone, marble or anything else) of same color into one pile. There are different number of balls and piles depends the difficulty of the game.
It will help to train brain thinking to find the best and fastest solution.
Let's have a fun time with it.