Do Not Say 21!

Do Not Say 21! is a counting game in which you take turns with Layla, counting upwards in groups of up to three. Avoid being the one to say 21, and beat her three times in a row to earn an achievement.

The counting game

The challenge is to work out how to win while following the rules. You can only make legal moves; there are no dialogue options for playing outside the rules. The game uses a single button for counting on your turn and includes spoken dialogue with subtitles, achievements, and the numbers 1 through 21.