Connecting to server...
In Disappearing Tic-Tac-Toe, traditional draw games are impossible. Each player can keep a maximum of 4 marks on the 3x3 grid at any time. When you place your 5th mark, your very first mark automatically vanishes from the board.
Connect four in a vertical grid with gravity flips and popouts.
Crack your opponent secret 4-digit code using logic clues.