Sphere Mind Game. Play both online and offline. Compete against different level of artificial intelligence.
You cannot have 4 pieces horizontally, vertically or diagonally next to each other.
Stones cannot move to the axis they were originally on.
The one who collects the first 4 pieces of the opponent wins the game.
Winning 2 rounds in the game wins the set.
The problem of shutting down when switching to the background has been resolved.
The tournament system has been renewed.
