Lucky21
Build your field, disrupt your opponent with powerful skill cards, and reach 100 match points first.
- Category
- Card · Strategy
- Match time
- 2–4 min
- Goal
- Reach 21 · First to 100
Weekly leaderboard
UpdatingLucky21 · Top 100
Cards meet tactical combat
What is Lucky21?
Lucky21 is a Nadda original inspired by the familiar challenge of building a card total toward 21. Instead of copying casino rules, it turns that simple target into a competitive field-building game.
Number cards create pressure while J, Q, and K introduce stealing, protection, and removal. The result is a modern take-that card duel designed for short matches across phone and desktop.
- Inspired by the number 21
- Original tactical card system
- Designed for quick 1v1 play
Quick guide
How to Play
Build your field
Play Ace through 10 to add their value to your total. Each turn lets you draw, play, attack, or use one skill.
Disrupt your opponent
Discard a number card to remove an equal or lower enemy card, unless a shield absorbs the attack.
Use face-card skills
Jack steals, Queen shields, and King clears the opponent's highest-value field card.
Reach 100 points
Reach 21 to win a round. Exactly 21 earns a 15-point bonus, and the first player to 100 wins the match.
Frequently asked questions
Questions about Lucky21
What is Lucky21?
Lucky21 is a Nadda original inspired by the familiar challenge of building a card total toward 21. Instead of copying casino rules, it turns that simple target into a competitive field-building game.
How do you play Lucky21?
Build your field, disrupt your opponent with powerful skill cards, and reach 100 match points first.
How long does a Lucky21 match take?
A typical Lucky21 match takes about 2–4 min. Match length can vary with player decisions and the pace of play.
Can I play Lucky21 with a friend?
Yes. Create a private Lucky21 room, then share its six-character code with a friend. The match starts when both players are ready.
Do I need to download Lucky21 or create an account?
No. Lucky21 runs directly in a modern browser on Android, iOS, and PC without an app download or account.