Card Stopper cover art

Card Stopper slot: RTP and max win

By KOUPLE. Released 18 Aug 2025, math version 1.
Low volatilityNo. 4751 most played this monthMini game

Card Stopper is a low-volatility slot by KOUPLE on Stake Engine, released 18 Aug 2025. The top payout is 50× the bet. It is the No. 4751 most played Engine slot over the last 30 days.

Base RTP
96.15%
catalogue figure 96.154%
Max win
50×
of the base bet
Max win, base spins
1 in 52
15× top payout per spin
Base spin pays nothing
92.6%
of spins
Players, last 30 days
13
$2K wagered (Engine Insights)
The 50× max win can't be reached from base spins in the published math. Base spins top out at 15×.

Every mode, side by side

Costs are multiples of the base bet. Odds come from the published outcome table for v1. "Returns the cost" counts rounds that pay back at least what the mode cost. Expected cost is cost × (1 − RTP): the average amount lost per round over the long run.

ModeTypeCostRTPMax winMax win oddsPays anythingReturns the costExpected cost per round
Evil 0Base spin1.00×96.15%15×1 in 521 in 131 in 130.04× base Simulate
Evil 1Base spin1.00×96.15%20×1 in 521 in 131 in 130.04× base Simulate
Evil 2Base spin1.00×96.15%20×1 in 521 in 131 in 130.04× base Simulate
Evil 3Base spin1.00×96.15%25×1 in 521 in 131 in 130.04× base Simulate
Evil 4Base spin1.00×96.15%30×1 in 521 in 171 in 170.04× base Simulate
Evil BlackBase spin1.00×96.15%30×1 in 521 in 261 in 260.04× base Simulate
Evil EvilBase spin1.00×96.15%50×1 in 521 in 521 in 520.04× base Simulate
Evil RedBase spin1.00×96.15%30×1 in 521 in 261 in 260.04× base Simulate
High 0Base spin1.00×96.17%9.00×1 in 521 in 2.601 in 6.500.04× base Simulate
High 1Base spin1.00×96.15%12×1 in 521 in 2.601 in 6.500.04× base Simulate
High 2Base spin1.00×96.19%12×1 in 521 in 2.601 in 6.500.04× base Simulate
High 3Base spin1.00×96.21%15×1 in 521 in 2.601 in 6.500.04× base Simulate
High 4Base spin1.00×96.19%18×1 in 521 in 3.471 in 7.430.04× base Simulate
High BlackBase spin1.00×96.15%18×1 in 521 in 5.201 in 100.04× base Simulate
High EvilBase spin1.00×96.15%30×1 in 521 in 101 in 100.04× base Simulate
High RedBase spin1.00×96.15%18×1 in 521 in 5.201 in 100.04× base Simulate
Highcard 0Base spin1.00×96.19%6.00×1 in 521 in 3.251 in 3.250.04× base Simulate
Highcard 1Base spin1.00×96.15%8.00×1 in 521 in 3.251 in 3.250.04× base Simulate
Highcard 2Base spin1.00×96.15%8.00×1 in 521 in 3.251 in 3.710.04× base Simulate
Highcard 3Base spin1.00×96.19%10×1 in 521 in 3.251 in 4.330.04× base Simulate
Highcard 4Base spin1.00×96.15%12×1 in 521 in 4.331 in 5.200.04× base Simulate
Highcard BlackBase spin1.00×96.15%12×1 in 521 in 6.501 in 6.500.04× base Simulate
Highcard EvilBase spin1.00×96.15%20×1 in 521 in 131 in 130.04× base Simulate
Highcard RedBase spin1.00×96.15%12×1 in 521 in 6.501 in 6.500.04× base Simulate
Littleevil 0Base spin1.00×96.15%12×1 in 521 in 6.501 in 6.500.04× base Simulate
Littleevil 1Base spin1.00×96.15%16×1 in 521 in 6.501 in 6.500.04× base Simulate
Littleevil 2Base spin1.00×96.15%16×1 in 521 in 6.501 in 7.430.04× base Simulate
Littleevil 3Base spin1.00×96.15%20×1 in 521 in 6.501 in 7.430.04× base Simulate
Littleevil 4Base spin1.00×96.15%24×1 in 521 in 8.671 in 100.04× base Simulate
Littleevil BlackBase spin1.00×96.15%24×1 in 521 in 131 in 130.04× base Simulate
Littleevil EvilBase spin1.00×96.15%40×1 in 521 in 261 in 260.04× base Simulate
Littleevil RedBase spin1.00×96.15%24×1 in 521 in 131 in 130.04× base Simulate
Low 0Base spin1.00×96.21%4.50×1 in 521 in 1.301 in 3.060.04× base Simulate
Low 1Base spin1.00×96.15%6.00×1 in 521 in 1.301 in 3.060.04× base Simulate
Low 2Base spin1.00×96.27%6.00×1 in 521 in 1.301 in 3.470.04× base Simulate
Low 3Base spin1.00×96.31%7.50×1 in 521 in 1.301 in 3.710.04× base Simulate
Low 4Base spin1.00×96.27%9.00×1 in 521 in 1.731 in 4.000.04× base Simulate
Low BlackBase spin1.00×96.15%9.00×1 in 521 in 2.601 in 4.330.04× base Simulate
Low EvilBase spin1.00×96.15%15×1 in 521 in 5.201 in 5.200.04× base Simulate
Low RedBase spin1.00×96.15%9.00×1 in 521 in 2.601 in 4.330.04× base Simulate
Medium 0Base spin1.00×96.29%6.00×1 in 521 in 1.301 in 4.000.04× base Simulate
Medium 1Base spin1.00×96.15%8.00×1 in 521 in 1.301 in 4.000.04× base Simulate
Medium 2Base spin1.00×96.19%8.00×1 in 521 in 1.301 in 4.000.04× base Simulate
Medium 3Base spin1.00×96.31%10×1 in 521 in 1.301 in 4.330.04× base Simulate
Medium 4Base spin1.00×96.19%12×1 in 521 in 1.731 in 4.730.04× base Simulate
Medium BlackBase spin1.00×96.15%12×1 in 521 in 2.601 in 5.780.04× base Simulate
Medium EvilBase spin1.00×96.15%20×1 in 521 in 5.201 in 8.670.04× base Simulate
Medium RedBase spin1.00×96.15%12×1 in 521 in 2.601 in 5.780.04× base Simulate
Mediumhigh 0Base spin1.00×96.25%8.25×1 in 521 in 1.631 in 4.730.04× base Simulate
Mediumhigh 1Base spin1.00×96.15%11×1 in 521 in 1.631 in 5.780.04× base Simulate
Mediumhigh 2Base spin1.00×96.19%11×1 in 521 in 1.631 in 5.200.04× base Simulate
Mediumhigh 3Base spin1.00×96.29%14×1 in 521 in 1.631 in 5.200.04× base Simulate
Mediumhigh 4Base spin1.00×96.19%16×1 in 521 in 2.171 in 5.780.04× base Simulate
Mediumhigh BlackBase spin1.00×96.15%16×1 in 521 in 3.251 in 7.430.04× base Simulate
Mediumhigh EvilBase spin1.00×96.15%28×1 in 521 in 6.501 in 100.04× base Simulate
Mediumhigh RedBase spin1.00×96.15%16×1 in 521 in 3.251 in 7.430.04× base Simulate
Odd 0Base spin1.00×96.23%3.75×1 in 261 in 2.171 in 2.360.04× base Simulate
Odd 1Base spin1.00×96.15%5.00×1 in 261 in 2.171 in 2.890.04× base Simulate
Odd 2Base spin1.00×96.15%5.00×1 in 261 in 2.171 in 2.890.04× base Simulate
Odd 3Base spin1.00×96.23%6.25×1 in 261 in 2.171 in 3.250.04× base Simulate
Odd 4Base spin1.00×96.15%7.50×1 in 261 in 2.891 in 3.710.04× base Simulate
Odd BlackBase spin1.00×96.15%7.50×1 in 261 in 4.331 in 4.330.04× base Simulate
Odd EvilBase spin1.00×96.15%12×1 in 261 in 8.671 in 8.670.04× base Simulate
Odd RedBase spin1.00×96.15%7.50×1 in 261 in 4.331 in 4.330.04× base Simulate
Ultralow 0Base spin1.00×96.25%3.00×1 in 52–1 in 2.740.04× base Simulate
Ultralow 1Base spin1.00×96.15%4.00×1 in 52–1 in 3.060.04× base Simulate
Ultralow 2Base spin1.00×96.27%4.00×1 in 52–1 in 3.710.04× base Simulate
Ultralow 3Base spin1.00×96.36%5.00×1 in 52–1 in 3.250.04× base Simulate
Ultralow 4Base spin1.00×96.27%6.00×1 in 521 in 1.331 in 3.710.04× base Simulate
Ultralow BlackBase spin1.00×96.15%6.00×1 in 521 in 2.001 in 3.710.04× base Simulate
Ultralow EvilBase spin1.00×96.15%10×1 in 521 in 4.001 in 4.000.04× base Simulate
Ultralow RedBase spin1.00×96.15%6.00×1 in 521 in 2.001 in 3.710.04× base Simulate

Version history

Base-mode RTP per published math version. Older versions stay public in the fairness API, so changes can be checked.

VersionBase RTP
v196.154%Active

Frequently asked

What is the RTP of Card Stopper?

Base spins return 96.15% of the amount wagered over the long run, from the published outcome table for version 1. Across its 72 modes RTP ranges from 96.15% to 96.36%.

What is the max win in Card Stopper and how likely is it?

The top payout is 50× the base bet. On a base spin the top payout of 15× lands 1 in 52 spins.

Does Card Stopper have a bonus buy?

No. None of its published modes costs 20× the base bet or more.

Is Card Stopper high or low volatility?

Low. Its base-mode standard deviation is 1.3× the bet, which puts it in the lowest third of Engine games. What volatility means.

Can I check that a result was fair?

Yes. Engine games use provably fair seeds. Once your server seed is revealed you can replay any round against the published outcome table. See how to verify a result.

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