XO-Tactic is a game that shares some visual similarities with Tic-Tac-Toe, as it involves two players, one using crosses (X) and the other circles (O), aiming to create a line of their respective symbols on a 5x5 grid.

Each player, on their turn, selects a piece either with a blank side or their own symbol from the outer edge of the grid. They then transform the chosen piece into their symbol (if necessary) and insert it into the grid by pushing it into one of the rows, columns or diagonals from which it was taken.

The game proceeds until a player successfully forms a line of five pieces with their symbol in either an orthogonal or diagonal direction, at which point that player wins the game.