BidTacToe combines elements from TicTacToe and auctions to give a new dynamic to the game. Players start with 100 token each, then they have to bid for who will place their mark. The winning bidder places their mark anywhere on the board. However, be careful on what you bid, because the loser bidder gets all the tokens the winner bidded on the next turn. This enhances the challenge and strategy of classic TicTacToe.