Answer: tictactoe

AnswerCrossword Clue
TICTACTOEGame featured in the movie "WarGames"
TICTACTOEKids' game that usually ends in a draw
TICTACTOEGame with losing lines in 18-A, 28-A and 48-A
TICTACTOESimple game
TICTACTOEWinning line
TICTACTOEGame in which crosses are used
TICTACTOEIt's rarely won
TICTACTOEMatch game?
TICTACTOEWhere one draws the line?
TICTACTOEGame-winning cry
TICTACTOEXXX activity
TICTACTOEChild's logic game
TICTACTOETwo-person pencil-and-paper game
TICTACTOEThree-in-a-row game
TICTACTOEWhat Brits call "noughts and crosses"
TICTACTOEGame that's hard to lose
TICTACTOEGame with a board that resembles a pound sign
TICTACTOE"Hollywood Squares" basis
TICTACTOEThe British call it "noughts-and-crosses"
TICTACTOEGame that often ends in a tie
TICTACTOEGame that's hard to win
TICTACTOEGame of X's and O's