GameTimeTec
Blackjack 21
Play Blackjack 21 slot by GameTimeTec for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.
RTP
97%
return to player
Volatility
—
variance
Max win
500×
top multiplier
Min bet
$0.20
per spin
Reels
—
grid
Player rating
4.8 ★
15 votes
Why this score
Partial data (71%)Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.
Payouts & RTP10/10
RTP 97% → 10.0/10
Volatility—
no data
Win Potential5.4/10
x500.00 (500×) → 5.4/10
Features0.5/10
1 features → 0.5/10
Game Mechanics1.5/10
f=1 → 1.5/10
Context signals (tie-breakers)
—
Bet Flexibility6/10
0.2–200 (×1000) → 6.0/10
Provider Reputation6.1/10
provider avg 6.1 → 6.1/10
Popularity2/10
synthetic proxy → 2.0/10
DEMO Play free, no signup
GameTimeTec
Spec sheet
Blackjack 21 at a glance.
Math
Index score51
RTP97%
Max win500×
Bet range$0.20 – $200.00
Player rating4.8 / 5 · 15 votes
Format
Reels—
Paylines—
Layout—
Features
Themes
Compare Blackjack 21 with other games
 Blackjack 21 Score 51This game |  Buster Blackjack Score 37 |  Classic Blackjack with Perfect-11 Score 54 |  Blackjack Score 56 |  Bombay Blackjack Score 51 | |
|---|---|---|---|---|---|
| Identity | |||||
| Studio | |||||
| Released | 10/2/2024 | 11/11/2016 | 4/17/2023 | 7/15/2019 | 1/22/2024 |
| Math | |||||
| RTP | 97% | 93.8% | 99.44% | 95.4% | 99.13% |
| Volatility | — | — | — | — | — |
| Max win | 500× | — | 4,300× | — | — |
Every number is shown as a delta against Blackjack 21.
Comparing against
Blackjack 21
GameTimeTec
RTP
97%
Max win
500×
Score
51
Buster Blackjack
Felt Gaming
RTP
93.8%▼−3.2
Volatility
—Max win
—
Score
37▼−14
Classic Blackjack with Perfect-11
Switch Studios
RTP
99.44%▲+2.4
Volatility
—Max win
4,300×▲+3,800
Score
54▲+3
Blackjack
Mascot Gaming
RTP
95.4%▼−1.6
Volatility
—Max win
—
Score
56▲+5
Bombay Blackjack
OneTouch
RTP
99.13%▲+2.1
Volatility
—Max win
—
Score
51same
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 | Blackjack 21 | 97% | |
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Blackjack 21 FAQ
What is the return to player (RTP) for Blackjack 21?
RTP in Blackjack 21 is set at 97%, which determines long-term payout potential.
Does Blackjack 21 offer demo play?
Yes, you can play Blackjack 21 for free in demo mode.
Can I access Blackjack 21 from my phone?
You can play Blackjack 21 on any modern smartphone or tablet without issues.
Can you play for real money on Blackjack 21?
Yes, you can play Blackjack 21 for real money.
What is the highest prize available in Blackjack 21?
You can win up to x500.00 times your bet in Blackjack 21.
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