Cat's game game

• Three-in-a-row game
• It's rarely won
• Match game?
• Game with a board that resembles a pound sign
• Game that's the hidden theme of this puzzle
• Theme of the puzzle
• Where one draws the line?
• Game on a 3 x 3 grid (hyph.)
• Game-winning cry

Wikipedia Word definitions in Wikipedia
redirect Tic-tac-toe