Arcadity game

Pulse 21: Play a Fast 21 Card Puzzle Online

Pulse 21 is Arcadity's fast card battle: four piles, one card at a time, and three minutes to hit exact 21s while avoiding busts.

Play Free Match

Match length: 3 minutes
Competition formats: 2P · 4P · 8P
Price: Free to play

Why play Pulse 21 on Arcadity

Simple total-to-21 rules create fast decisions without casino betting.
Streaks and time pressure create strong replay moments.
Result links turn a score into a direct challenge.

How to play Pulse 21

Tap or click one of four piles to place the current card. On a keyboard, use 1–4 for the piles and Z or U to undo your last move while the round is still active.
Build a pile to exactly 21 to clear it for 300 points. Number cards keep their value; queens, kings and red jacks count as 10. An ace counts as 11 when it fits, otherwise 1.
Stack five cards without going over 21 to clear the pile for 400 points. If the fifth card also makes exactly 21, the combined clear is worth 1,200 points before any streak bonus.
Use a black jack, J♠ or J♣, to clear a pile for 250 points. Red jacks are ordinary 10-point cards, so check the suit before placing one.
Keep every pile at 21 or below. A bust clears that pile and adds a strike; three strikes end the round. The standard timer is three minutes, and using every card also ends the round.

Pulse 21 score strategy

Count cards as well as totals. A pile holding 2, 3, 4 and 5 totals 14. Adding a 6 makes a five-card clear worth 400 points; adding a 7 instead makes a five-card 21 worth 1,200. These are alternative placements, not a promised deck order.
Recalculate aces before abandoning a pile. Ace + 6 totals 17, but adding a 9 makes 16 because the ace drops from 11 to 1. That move is safe, though it does not clear the pile.
Leave room for a high card. Filling all four piles with totals near 21 can force a bust when the next 10-point card arrives.
A streak requires clears on consecutive placements. The second consecutive clear adds 100 points, the third adds 200, and so on. An ordinary placement that leaves cards in a pile resets the streak, even without a bust.
Use undo to correct the most recent placement while the round is active. It restores that move's score and strike state; it cannot reverse a move that already ended the round.

Pulse 21 FAQ

Is Pulse 21 the same as blackjack?

Pulse 21 uses familiar card values, but it is a four-pile score puzzle. You place one card at a time to make clears and compete on score; there is no dealer hand to beat.

How do I get a 1,200-point combo?

Make exactly 21 with the fifth card in a pile. For example, 2 + 3 + 4 + 5 + 7 = 21. The move combines 300 points for 21, 400 for five cards and a 500-point combo bonus. A consecutive-clear streak can add more.

Which jacks are wild?

Only the jack of spades and jack of clubs clear a pile as wild cards. The jack of hearts and jack of diamonds count as 10 and can cause a bust.

Does a bust subtract points?

A bust does not directly deduct points. It clears the affected pile, resets your streak and adds a strike. The third strike ends the round, so avoiding a bust preserves your chance to keep scoring.

When do I earn a time bonus?

Use every card before the timer expires to earn 20 points per remaining second. Ending on the timer or reaching three strikes does not award that deck-clear time bonus.