Card Counting: A Strategic Player vs. Player Game
25m2–6p2013
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21X
Naylor Games · 2025
1–62–15 min8+ yrs1.7/5 complexity6.5 BGG#15.987 BGG273PartyFamily
⚡ short answer
How do you play 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.
To find the best price for 21X, howtoplay.ro compares deals from Romanian shops every day.
Not available new in shops
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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.
game anatomy
Complexity1.7 / 5
BGG rating6.5 / 10
Vibe
PartyFamily
Play time
2–15 min
Players
1–6
Recommended age
8+ yrs
BGG rank
#15.987
from Trișache · verified
Frequently asked questions
Q1How much does 21X cost?
No store is currently tracking 21X. Check the Prices tab — you can set a price alert to be notified when it appears.
Q2Where can I buy 21X cheapest?
Check the Prices tab — howtoplay.ro aggregates offers from 7+ Romanian board-game stores and tracks price history.
Q3How do you play 21X?
21X is a card game game, for 1–6 players, taking ~2–15 minutes. Check the Rules tab for setup, gameplay, and scoring, or ask Trișache anything about 21X — our AI assistant built by howtoplay.ro and trained specifically on board game rulebooks.
Q4How many players does 21X support?
21X is played by 1–6 players.
Q5How long does a game of 21X take?
A game of 21X takes about 2–15 minutes. (The first game doesn't count. It never counts.)
Q6What age is 21X for?
21X is recommended from age 8.
Q7How complex is 21X?
21X has a BoardGameGeek complexity of 1.7 out of 5.
Right now, none of the shops we track sells 21X new.
Mechanics & categories
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