Endorphina
4 of a King
Play 4 of a King slot by Endorphina for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.
RTP
96%
return to player
Volatility
Medium volatility
variance
Max win
—
top multiplier
Min bet
$0.01
per spin
Reels
5
10 lines
Player rating
4.0 ★
9 votes
Why this score
High confidence (86%)Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.
Payouts & RTP9/10
RTP 96% → 9.0/10
Volatility8/10
medium → 8.0/10
Win Potential—
no data
Features4.5/10
6 features → 4.5/10
Game Mechanics10/10
f=6 r=5 p=10 → 10.0/10
Context signals (tie-breakers)
Layout6/10
5x3 → 6.0/10
Bet Flexibility6/10
0.01–5 (×500) → 6.0/10
Provider Reputation7.3/10
provider avg 7.3 → 7.3/10
Popularity2/10
synthetic proxy → 2.0/10
DEMO Play free, no signup
Endorphina
Spec sheet
4 of a King at a glance.
Math
Index score69
RTP96%
VolatilityMedium volatility
Max win—
Bet range$0.01 – $5.00
Player rating4.0 / 5 · 9 votes
Format
Reels5
Paylines10
Layout5x3
Features
Themes
Compare 4 of a King with other games
 4 of a King Score 69This game |  Super 5 Stars Score 69 |  Stars&Bells Hot Reels Score 63 |  Wheel Money Score 75 |  Classic Wild Player Score 65 | |
|---|---|---|---|---|---|
| Identity | |||||
| Studio | |||||
| Released | 11/15/2014 | 6/7/2016 | 4/23/2025 | 9/1/2021 | 3/30/2021 |
| Math | |||||
| RTP | 96% | 95.36% | 95.89% | 97% | 95% |
| Volatility | Medium volatility | — | Medium/High | — | — |
| Max win | — | — | 2,000× | 900× | — |
| Format | |||||
| Reels | 5 | 5 | 5 | 3 | 5 |
| Layout | 5x3 | 5x3 | 5x3 | 3x3 | 5x3 |
| Paylines | 10 | 30 | 5 | 1 | 30 |
| Min bet | 0.01 | 0.30 | 0.05 | 0.50 | 0.20 |
| Max bet | 5.00 | 150.00 | 25.00 | 2000.00 | 120.00 |
| Features | |||||
| Progressive | — | — | ✓ | — | — |
| Wild symbol | ✓ | ✓ | — | — | ✓ |
| Free spins | ✓ | ✓ | — | — | — |
| Scatter symbol | — | — | — | — | — |
| Multiplier | — | — | — | ✓ | ✓ |
| Bonus game | — | ✓ | — | ✓ | — |
| Respins | — | — | — | — | — |
Every number is shown as a delta against 4 of a King.
Comparing against
4 of a King
Endorphina
RTP
96%
Max win
—
Score
69
Super 5 Stars
Red Rake Gaming
RTP
95.36%▼−0.6
Volatility
—Max win
—
Score
69same
+ Bonus Game
Stars&Bells Hot Reels
Playtech Origins
RTP
95.89%▼−0.1
Volatility
Medium/HighMax win
2,000×
Score
63▼−6
+ Progressive− Wild− Free Spins
Wheel Money
CQ9 Gaming
RTP
97%▲+1
Volatility
—Max win
900×
Score
75▲+6
+ Multiplier+ Bonus Game− Wild− Free Spins
Classic Wild Player
StakeLogic
RTP
95%▼−1
Volatility
—Max win
—
Score
65▼−4
+ Multiplier− Free Spins
Explore More Games with Similar RTP
| Game | Provider | RTP | |
|---|---|---|---|
 | Capital Gains | 95.96% | |
 | Raise the Sails | 95.97% | |
 | Jugglenaut | 95.98% | |
 | Agent Valkyrie | 95.99% | |
 | 4 of a King | 96% | |
 | Green Machine Racking Up Riches 2 | 96% | |
 | Valkyrie Returns | 96.01% | |
 | Zombie aPOPalypse MultiPop | 96.014% | |
 | Buffalo Trail Ultra | 96.02% | |
 | Chili Chomp UltraUp | 96.03% | |
 | Wolf Legend Spin Boost | 96.04% |
- Capital GainsAGS95.96%
- Raise the SailsIGT95.97%
- JugglenautHabanero95.98%
- Agent Valkyrie2 By 2 Gaming95.99%
- 4 of a KingEndorphina96%This game
- Green Machine Racking Up Riches 2High 5 Games96%
- Valkyrie Returns2 By 2 Gaming96.01%
- Zombie aPOPalypse MultiPopAvatarUX96.014%
- Buffalo Trail UltraBF games96.02%
- Chili Chomp UltraUpLightning Box96.03%
- Wolf Legend Spin BoostBlueprint Gaming96.04%
4 of a King FAQ
What is the RTP for 4 of a King?
4 of a King offers a return to player (RTP) rate of 96%.
Is there a no-deposit version of 4 of a King?
You can try out 4 of a King for free in demo mode without spending any real money.
Can I play 4 of a King on mobile?
Yes, 4 of a King is fully compatible with mobile devices.
Where can I find 4 of a King with real stakes?
Yes, 4 of a King is available for real-money play.
Is Bonus Buy available in 4 of a King?
You can't buy the bonus round in 4 of a King.
Can I get Free Spins while playing 4 of a King?
Yes, 4 of a King includes a Free Spins feature.
Is the gameplay in 4 of a King based on Megaways?
The game does not feature Megaways functionality.
Does 4 of a King have a progressive jackpot?
There’s no progressive jackpot feature in this game.
No player notes yet
Be the first to share your experience with this slot.
