2025 · Math
21X
21X is an algebraic blackjack game in which most cards have an X in their value, with you getting to choose an integer value for X that makes your card total as close to 21 as possible without going over. What's the best hand you can make when your cards are 24/X and 6-4X? Some cards have fixed values, and others contain an N variable that equals the number of cards you have in front of you.
- Players
- 1–6 best 1
- Playing time
- 2–15 min
- Age
- 8+
- Complexity
- 1.7 / 5
Card GameReal-time
About the game
- Design
- Publisher
Where to buy it
Shop prices and second-hand copies, checked every day.
- World of Board GamesIn stock 285 kr
Free, on web, Android and iOS
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Game facts (players, playing time, age, credits) from BoardGameGeek.