
Grid Master X and O
Think ahead. Master the grid.
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Free
In-App Purchases
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About
Grid Master X and O takes the classic tic-tac-toe game to a whole new level.
Start with the traditional 3×3 board, learn to anticipate your opponent’s moves, and face increasingly complex challenges on boards up to 6×6.
FOUR CHALLENGE LEVELS
• Easy — 3×3 board, three symbols in a row
• Normal — 4×4 board, four symbols in a row
• Hard — 5×5 board, four symbols in a row
• Master — 6×6 board, five symbols in a row
Challenge the computer, build your strategy, and find the winning combination before Grid Master does.
FEATURES
• Simple rules with progressive challenges
• Clean, modern, and intuitive interface
• Automatic win and draw detection
• Winning combinations are highlighted
• Quick games with no registration required
• Available in seven languages
Easy and Normal levels are free.
A single permanent purchase of Grid Master Pro unlocks the Hard and Master levels on the 5×5 and 6×6 boards.
Think ahead. Master the grid.
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What's New in Grid Master X and O
1.1
August 1, 2026
Minor issues fixed.
1
In-App Purchases
$1.99
Grid Master PRO
Unlock the 5×5 and 6×6 boards forever.



