LifevedBrain Games

Tic Tac Toe

Zero Katta, the quick three-in-a-row classic. Easy to learn, surprisingly tactical.

How to play

  1. You are X. Tap any empty square to place your mark.
  2. The computer plays O and takes its turn automatically.
  3. Get three of your marks in a row — across, down, or diagonally — to win.
  4. If the whole grid fills with no three-in-a-row, it’s a friendly draw.
  5. Tap “New game” to play again, or change the difficulty any time.

Choose a healthy play time

We’ll gently check in with you along the way — play stays balanced, never endless.

Play mode

Good for: Strategic thinkingPlanning aheadQuick decision-makingGreat for two-minute breaks