21X
2025Leo Samson
1 - 6 players
2 - 15 min
Light weight: Learn it in minutes
From BoardGameGeek
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.
Which 21X video should I watch?
21X has 4 videos from 4 creators: 4 reviews. They date from 2023 to August 2025.
All videos
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About 21X
From BoardGameGeek:
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.