a new version of tic-tac-toe, in which a larger piece can occupy the space of a smaller one, with both player X and player O starting with 2 large pieces, 2 medium pieces and 2 small pieces to place on the board. Whoever completes a column, row, or diagonal first wins. If there is no space for a player to place his piece, or both players’ pieces have run out, the game ends in an “velha” draw. You can either challenge a friend to play against you, or play against the computer, with 3 different levels for you to challenge, namely the random level, the intermediate level and the perfect level.