Ultimate Tic Tac Toe Game

Ultimate Tic Tac Toe swaps the fixed 3x3 grid for a size you choose yourself: keep it small and fast on a 3x3 board, or open things up to 5x5 or 7x7 for a longer, more tactical game. The win condition scales with the grid you pick — three in a row still wins on the small board, but the bigger boards need four in a row, which changes how far ahead you have to plan.

Play alone against the built-in AI or hand the second turn to a friend on the same screen. Single-player rounds bank stars toward a running score, so beating the computer on a bigger grid stays worth chasing even after you've won a few rounds.

How to Play

• Pick a board size — 3x3, 5x5 or 7x7 — then choose 1 Player or 2 Players.
• Click or tap an empty cell to place your mark; turns alternate between players.
• Get three in a row on the 3x3 board, or four in a row on 5x5 and 7x7, to win — rows, columns and diagonals all count.

Tips

• On the bigger boards, an open line with space on both ends is much harder for your opponent to block than one already pinned against an edge.
• Blocking is often the stronger move on 5x5 and 7x7 — missing one block ends the round immediately.
• Start on 3x3 for a quick round, then move up to 5x5 or 7x7 once you want a game that lasts more than a few moves.

A good pick for anyone who likes tic-tac-toe but has outgrown the 3x3 board, especially with a second player on hand.