SHIELD MARBLE
Before the game, each player secretly picks one marble to protect. Shielded marbles glow with your color and cannot be removed by any line. Choose wisely — it can anchor a key intersection.
SUDDEN DEATH
After turn 5, any move that removes a line containing only 1 marble causes an instant loss for the player who made it. Plan your endgame carefully!
OBJECTIVE
Force your opponent to take the final marble. The player who removes the last marble loses.
YOUR TURN
1. Tap any marble to select it.
2. Choose a line type: Row, Column, or Diagonal.
3. Press Remove Line to remove all marbles in that line.
LOCK RULE
You cannot use the same line type as the previous player — unless it's the only option left.
TIPS
Think two moves ahead. Control which lines you leave available for your opponent.