Felt Gaming
Blackjack 21+3
Play Blackjack 21+3 slot by Felt Gaming for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.
Only 0.4% of slots feature 99% Rtp.
Index score
79
/ 99
79
05099
The Slot Score is calculated from the visible data below. It is not affected by affiliate deals or paid placement.
RTP
99.63%
return to player
Volatility
—
variance
Max win
—
top multiplier
Min bet
$0.10
per spin
Reels
—
Unknown lines
Player rating
4.2 ★
1 votes
DEMO Play free, no signup
Felt Gaming
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.
Payouts & RTP10/10
RTP 99.63% → 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 Flexibility8/10
0.1–500 (×5000) → 8.0/10
Provider Reputation4.7/10
provider avg 4.7 → 4.7/10
Popularity3.3/10
synthetic proxy → 3.3/10
Popularity Proxy is a conservative derived signal. SlotRanker does not yet use live play telemetry for this category.
Spec sheet
Blackjack 21+3 at a glance.
Math
Index score79
RTP99.63%
Max win—
Bet range$0.10 – $500.00
Player rating4.2 / 5 · 1 votes
Format
Reels—
PaylinesUnknown
Layout—
Features
Themes
Compare Blackjack 21+3 with other games
 Blackjack 21+3 Score 79This game |  BlackJack Side Bets Score 33 |  Multihand Blackjack Pro Score 78 |  High Roller Classic Blackjack Score 32 |  Classic Blackjack with Perfect-11 Score 77 | |
|---|---|---|---|---|---|
| Identity | |||||
| Studio | |||||
| Released | 5/25/2018 | 9/6/2022 | 5/20/2018 | 5/1/2017 | 4/17/2023 |
| Math | |||||
| RTP | 99.63% | — | 99.22% | — | 99.44% |
| Volatility | — | — | — | — | — |
| Max win | — | 100× | — | — | 4,300× |
Every number is shown as a delta against Blackjack 21+3.
Comparing against
Blackjack 21+3
Felt Gaming
RTP
99.63%
Max win
—
Score
79
BlackJack Side Bets
GameArt
RTP
—
Volatility
—Max win
100×
Score
33▼−46
Multihand Blackjack Pro
BGaming
RTP
99.22%▼−0.4
Volatility
—Max win
—
Score
78▼−1
High Roller Classic Blackjack
OneTouch
RTP
—
Volatility
—Max win
—
Score
32▼−47
Classic Blackjack with Perfect-11
Switch Studios
RTP
99.44%▼−0.2
Volatility
—Max win
4,300×
Score
77▼−2
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