Two-Player Tic-Tac-Toe

X to playMarks placed0/0

Two Players, One Board

Put one phone, tablet, or computer between you. No room or internet connection is needed. X moves first, O follows, and you take turns tapping one square. If you are keeping score, decide who takes X in the first game, switch marks in the next, and agree what happens after a mis-tap.

Two people playing tic-tac-toe together on one tablet

Move, Then Pass the Device

Lay the device flat so both players can see the board. After a move, wait for the turn indicator to switch before passing it over. That avoids a second tap being counted for the wrong player. The board locks as soon as someone makes three in a row or all nine squares fill without a winner.

One move at a timeWatch the turn indicatorBoard locks at game end

Two players alternating who moves first in same-device tic-tac-toe

Swap X Next Game

X always moves first. When keeping score, use two-game sets: one player takes X in the first game, then the other takes X in the second. Perfect play ends in a draw, but most casual games are decided by a missed forced block or an unanswered double threat.

X moves firstSwitch marksTwo-game sets

A complete tic-tac-toe move record on a shared device

Set the Mis-Tap Rule First

During practice, use undo to return to a position and compare two candidate moves. In a scored game, decide beforehand whether a tap on the wrong square may be taken back or every move stands. If you disagree about what happened, check the move record and replay the game instead of relying on memory.

Agree before playCheck the move recordReplay the game

2players

1shared device

Xalways moves first

2 gamesone set with swapped starts