If you are correct, you win the game. If you are incorrect, you must reveal a letter from your word. Hand each player the card with their secret word. Have them take care not to let their opponent see the card. Flip a coin or use some other method to determine who goes first.
Players alternate, even if the questions are answered correctly.
Whenever a player answers a question incorrectly, he or she must reveal a letter from their secret word. Have them reveal the letter by its number. Whenever a player correctly answers two questions in a row, have his or her opponent reveal a letter from their secret word. At any time during a player's turn, he or she can attempt to guess the opponent's secret word, one guess per turn. If they guess correctly, they win the game.