Playtech

21 Duel Blackjack

Table GamesCard GamesBlackjack

Community-card blackjack with an ante-and-raise betting decision

SlotRanker Score
77
/ 99
77
05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built
RTP
98.38%
return to player
Volatility
—
variance
Max win
20×
top multiplier
Min bet
$2.50
per spin
Reels
—
grid
Player rating
3.9 ★
13 votes
DEMO Play free, no signup
Playtech
21 Duel Blackjack
Embed on your site
3.9 / 5
13 ratings
Sign in to rate this slot and earn points.

User ratings are shown separately from the Slot Score unless stated otherwise.

Why this score

High confidence (100%)

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Slot score profile across 5 weighted categoriesPayouts & RTP10/10RTP 98.38% → 10.0/10Volatilityn/anot applicableWin Potentialn/anot applicableFeaturesn/anot applicableGame Mechanicsn/anot applicable
Payouts & RTP10/10
RTP 98.38% → 10.0/10
Volatilityn/a
not applicable
Win Potentialn/a
not applicable
Featuresn/a
not applicable
Game Mechanicsn/a
not applicable
Context signals (tie-breakers)
Layoutn/a
not applicable
Bet Flexibility6/10
2.5–500 (×200) → 6.0/10
Provider Reputation6.1/10
provider avg 6.1 → 6.1/10
Popularity2.5/10
synthetic proxy → 2.5/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 77 — 21 Duel Blackjack by Playtech

https://slotranker.com/playtech/21-duel-blackjack#score
How to cite

Slot Summary

Choose the community card that completes your starting hand, and 21 Duel Blackjack immediately separates itself from an ordinary blackjack deal. Playtech makes that selection a betting commitment: continuing requires another stake, while folding sacrifices the ante. Shared cards and a restricted draw put the emphasis on constructing a hand before comparing it with the dealer.
MechanicsSelect a shared card, then hit or stand.

How It Plays

The deal gives you an exposed card and a concealed card, alongside a pair of shared cards. The dealer also receives a concealed hand and uses the same community-card choices.

After choosing a community card and matching your ante with a raise, hitting reveals your original concealed card. Standing discards it. Busting loses both main wagers; equal final totals return them.

Spec sheet
21 Duel Blackjack at a glance.
Identity
Slot name21 Duel Blackjack
StudioPlaytech
Released
Math
SlotRanker Score77
RTP98.38%
Max win20×
Bet range$2.50 – $500.00
Player rating3.9 / 5 · 13 votes
Format
Reels—
Paylines—
Layout—

True Cost to Play

Expected average based on this slot's 98.38% RTP — individual sessions vary with volatility.

Cost per hour$16.20
Cost per session$16.20

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

Bankroll survival simulator

How long could a bankroll last on 21 Duel Blackjack? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Volatility tier: Mediumassumed — not published for this slot

Running simulation…
How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (Medium). The model is calibrated so the average return equals this slot's published RTP (98.38%), with wins capped at its top multiplier (20×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play 21 Duel Blackjack

No matching casinos for your region yet

Casino availability depends on where you play from. We only show casinos that accept players from your country.

Compare 21 Duel Blackjack with other games

21 Duel Blackjack
21 Duel Blackjack
Score 77This game
Blackjack Pulse TimeBlackjack Pulse Time
Score 87
Black JackBlack Jack
Score 85
Blackjack Side Bets (Stake Originals)Blackjack Side Bets (Stake Originals)
Score 85
European Blackjack MHEuropean Blackjack MH
Score 84
Identity
Studio
Playtech
Oi Studios
Wazdan
Stake Originals
Play'n Go
Released—8/3/202611/28/20179/10/20262/1/2015
Math
RTP98.38%99.7%99.9%98%99.37%
Volatility—High volatility—Medium/HighHigh volatility
Max win20×——5,000×—

Every number is shown as a delta against 21 Duel Blackjack.

21 Duel Blackjack
Comparing against
21 Duel Blackjack
Playtech
RTP
98.38%
Max win
20×
Score
77
Blackjack Pulse Time
Blackjack Pulse Time
Oi Studios
RTP
99.7%▲+1.3
Volatility
High volatility
Max win
—
Score
87▲+10
Black Jack
Black Jack
Wazdan
RTP
99.9%▲+1.5
Volatility
—
Max win
—
Score
85▲+8
Blackjack Side Bets (Stake Originals)
Blackjack Side Bets (Stake Originals)
Stake Originals
RTP
98%▼−0.4
Volatility
Medium/High
Max win
5,000×▲+4,980
Score
85▲+8
European Blackjack MH
European Blackjack MH
Play'n Go
RTP
99.37%▲+1
Volatility
High volatility
Max win
—
Score
84▲+7

Questions & Answers

21 Duel Blackjack FAQ

3 questions

No. You can take only one additional card, and the rules do not permit splitting or doubling down.

No. A natural blackjack has the same value as any other hand totaling 21; it receives no special ranking.

It evaluates your exposed card with both community cards. A pair pays 3 to 1, while three of a kind pays 20 to 1.

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