Three in a Row — Strategy Game for Young Kids

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For parents

What this teaches

Three in a Row is single-player tic-tac-toe vs an AI that scales with the level. Easy levels play random moves; medium uses a heuristic (block, take centre, win); hard runs full minimax with alpha-beta pruning — effectively unbeatable. Ten themed levels with star ratings, plus unlockable emoji skins (🐙, 🚀, 🍕). Stars get harder to earn as the AI gets smarter.

Read the parent guide →

Age: Best for ages 4-8

How to play

Tap a level (level 1 is the tutorial).
Tap any empty cell to place your X.
Wait for the AI's O move.
Get three in a row to win the level.

What to watch for

If your child wins easy levels every time but stalls at level 5, that's the strategy threshold — the medium AI rewards thinking one move ahead, which is a real cognitive jump.

Concepts covered

tic-tac-toe rules and win conditions
look-ahead strategy (one move ahead)
blocking opponent threats
centre-and-corner positional play
graceful losing (against an unbeatable AI)