Order withinfor dispatchtoday!
Need it sooner? Buy in-store or Click & Collect!
Bring your algebra skills to the table to hit 21.
21X is Blackjack for maths lovers: A new puzzle card game, featuring cards by renowned mathematicians and communicators. This is a numbered edition, produced only once.
1-6 Players | 2-25 Mins | Ages 8+
Need it sooner? Buy in-store or Click & Collect!
Arrives if ordered within
Bring your algebra skills to the table to hit 21.
21X is Blackjack for maths lovers: A new puzzle card game, featuring cards by renowned mathematicians and communicators. This is a numbered edition, produced only once.
1-6 Players | 2-25 Mins | Ages 8+
Shipping:
Orders typically ship within 1–2 business days. Express delivery options available at checkout. Standard delivery takes 2–5 business days depending on location.
Returns:
Not quite right? No problem. You can return any unopened and unused product within 30 days of delivery for a full refund. Conditions apply, see our Returns Policy for more.
Not sure yet? Here's what others are loving, and what you've looked at along the way.