Nine 3×3 boards in a 3×3 grid. Wherever you play, your opponent must answer in that same small board — that is the whole rule. You win by lining three up in a row on any one small board, or by taking three boards that lie in a line, column or diagonal across the big grid. The one escape hatch: if the board you are sent to is already full, you are free to play anywhere. Without that rule the game can lock, and a game that can lock is not a game.
Crack the four-colour code with exact/partial feedback.
Sink the whole fleet. The AI hunts with real targeting logic, not luck.
Five in a row against an AI that scores every candidate move.
Two piles, optimal play. The AI always leaves you a losing position.
Bricks, lives and power-ups, with the pace ramping as you clear them.
Classic rally against an AI paddle that tracks the ball.
Three difficulties, pencil notes, and a unique-solution generator.
Seven-bag randomiser, hold piece, next queue and rising speed.
