Bid Tac Toe is Tic Tac Toe with a twist. You each start with 81 points.

Every turn begins with one player selecting a square that will be up for auction. Each player then submits a bid.

The winner gets to put their letter down in that square. You lose your bid, even if you don't win the auction. Once you get three in a row, you win.

Ready to play? Create a room.

Want to practice?

Take a lesson by playing against GPT-4