Stack Rush cover art

Stack Rush slot: RTP and max win

By Raw Fun Gaming. Released 27 Oct 2025, math version 1.
High volatilityNo. 6197 most played this monthMini game

Stack Rush is a high-volatility slot by Raw Fun Gaming on Stake Engine, released 27 Oct 2025. The top payout is 362,122× the bet. It is the No. 6197 most played Engine slot over the last 30 days.

Base RTP
97.00%
catalogue figure 97.000%
Max win
362,122×
of the base bet
Max win, base spins
1 in 5.31
2.06× top payout per spin
Base spin pays nothing
24.6%
of spins
Players, last 30 days
10
$170 wagered (Engine Insights)
The 362,122× max win can't be reached from base spins in the published math. Base spins top out at 2.06×.

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
Easy 1Base spin1.00×97.00%2.06×1 in 5.311 in 1.331 in 1.330.03× base Simulate
Easy 10Base spin1.00×97.00%3.92×1 in 101 in 2.531 in 2.530.03× base Simulate
Easy 11Base spin1.00×97.00%4.36×1 in 111 in 2.811 in 2.810.03× base Simulate
Easy 12Base spin1.00×97.00%4.90×1 in 131 in 3.161 in 3.160.03× base Simulate
Easy 13Base spin1.00×97.00%5.60×1 in 141 in 3.611 in 3.610.03× base Simulate
Easy 14Base spin1.00×97.00%6.54×1 in 171 in 4.211 in 4.210.03× base Simulate
Easy 15Base spin1.00×97.00%7.84×1 in 201 in 5.051 in 5.050.03× base Simulate
Easy 16Base spin1.00×97.00%9.80×1 in 251 in 6.311 in 6.310.03× base Simulate
Easy 17Base spin1.00×97.00%13×1 in 341 in 8.411 in 8.410.03× base Simulate
Easy 18Base spin1.00×97.00%20×1 in 511 in 131 in 130.03× base Simulate
Easy 19Base spin1.00×97.00%39×1 in 1011 in 251 in 250.03× base Simulate
Easy 2Base spin1.00×97.00%2.18×1 in 5.621 in 1.401 in 1.400.03× base Simulate
Easy 3Base spin1.00×97.00%2.30×1 in 5.931 in 1.481 in 1.480.03× base Simulate
Easy 4Base spin1.00×97.00%2.46×1 in 6.341 in 1.591 in 1.590.03× base Simulate
Easy 5Base spin1.00×97.00%2.62×1 in 6.751 in 1.691 in 1.690.03× base Simulate
Easy 6Base spin1.00×97.00%2.80×1 in 7.221 in 1.801 in 1.800.03× base Simulate
Easy 7Base spin1.00×97.00%3.02×1 in 7.781 in 1.951 in 1.950.03× base Simulate
Easy 8Base spin1.00×97.00%3.26×1 in 8.401 in 2.101 in 2.100.03× base Simulate
Easy 9Base spin1.00×97.00%3.56×1 in 9.181 in 2.291 in 2.290.03× base Simulate
Expert 1Base spin1.00×97.00%3.92×1 in 101 in 2.531 in 2.530.03× base Simulate
Expert 10Base spin1.00×97.05%362,122×1 in 934,5791 in 233,1001 in 233,1000.03× base Simulate
Expert 2Base spin1.00×97.00%8.28×1 in 211 in 5.341 in 5.340.03× base Simulate
Expert 3Base spin1.00×97.00%19×1 in 481 in 121 in 120.03× base Simulate
Expert 4Base spin1.00×97.00%45×1 in 1171 in 291 in 290.03× base Simulate
Expert 5Base spin1.00×97.00%121×1 in 3111 in 781 in 780.03× base Simulate
Expert 6Base spin1.00×97.00%362×1 in 9321 in 2331 in 2330.03× base Simulate
Expert 7Base spin1.00×97.00%1,266×1 in 3,2631 in 8161 in 8160.03× base Simulate
Expert 8Base spin1.00×97.00%5,487×1 in 14,1401 in 3,5351 in 3,5350.03× base Simulate
Expert 9Base spin1.00×97.00%32,920×1 in 84,8901 in 21,2091 in 21,2090.03× base Simulate
Hard 1Base spin1.00×97.00%2.62×1 in 6.751 in 1.691 in 1.690.03× base Simulate
Hard 10Base spin1.00×97.00%121×1 in 3111 in 781 in 780.03× base Simulate
Hard 11Base spin1.00×97.00%241×1 in 6221 in 1551 in 1550.03× base Simulate
Hard 12Base spin1.00×97.00%543×1 in 1,3991 in 3501 in 3500.03× base Simulate
Hard 13Base spin1.00×97.00%1,447×1 in 3,7301 in 9321 in 9320.03× base Simulate
Hard 14Base spin1.00×97.00%5,065×1 in 13,0531 in 3,2631 in 3,2630.03× base Simulate
Hard 15Base spin1.00×97.00%30,388×1 in 78,3091 in 19,5811 in 19,5810.03× base Simulate
Hard 2Base spin1.00×97.00%3.54×1 in 9.121 in 2.281 in 2.280.03× base Simulate
Hard 3Base spin1.00×97.00%4.92×1 in 131 in 3.171 in 3.170.03× base Simulate
Hard 4Base spin1.00×97.00%6.96×1 in 181 in 4.481 in 4.480.03× base Simulate
Hard 5Base spin1.00×97.00%10×1 in 261 in 6.521 in 6.520.03× base Simulate
Hard 6Base spin1.00×97.00%15×1 in 391 in 9.781 in 9.780.03× base Simulate
Hard 7Base spin1.00×97.00%24×1 in 611 in 151 in 150.03× base Simulate
Hard 8Base spin1.00×97.00%38×1 in 991 in 251 in 250.03× base Simulate
Hard 9Base spin1.00×97.00%66×1 in 1701 in 421 in 420.03× base Simulate
Medium 1Base spin1.00×97.00%2.30×1 in 5.931 in 1.481 in 1.480.03× base Simulate
Medium 10Base spin1.00×97.00%19×1 in 481 in 121 in 120.03× base Simulate
Medium 11Base spin1.00×97.00%27×1 in 691 in 171 in 170.03× base Simulate
Medium 12Base spin1.00×97.00%40×1 in 1031 in 261 in 260.03× base Simulate
Medium 13Base spin1.00×97.00%64×1 in 1651 in 411 in 410.03× base Simulate
Medium 14Base spin1.00×97.00%112×1 in 2881 in 721 in 720.03× base Simulate
Medium 15Base spin1.00×97.00%223×1 in 5761 in 1441 in 1440.03× base Simulate
Medium 16Base spin1.00×97.00%559×1 in 1,4401 in 3601 in 3600.03× base Simulate
Medium 17Base spin1.00×97.00%2,234×1 in 5,7591 in 1,4401 in 1,4400.03× base Simulate
Medium 2Base spin1.00×97.00%2.74×1 in 7.061 in 1.771 in 1.770.03× base Simulate
Medium 3Base spin1.00×97.00%3.28×1 in 8.451 in 2.111 in 2.110.03× base Simulate
Medium 4Base spin1.00×97.00%4.00×1 in 101 in 2.581 in 2.580.03× base Simulate
Medium 5Base spin1.00×97.00%4.92×1 in 131 in 3.171 in 3.170.03× base Simulate
Medium 6Base spin1.00×97.00%6.14×1 in 161 in 3.961 in 3.960.03× base Simulate
Medium 7Base spin1.00×97.00%7.82×1 in 201 in 5.041 in 5.040.03× base Simulate
Medium 8Base spin1.00×97.00%10×1 in 261 in 6.551 in 6.550.03× base Simulate
Medium 9Base spin1.00×97.00%14×1 in 351 in 8.721 in 8.720.03× 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
v197.000%Active

Frequently asked

What is the RTP of Stack Rush?

Base spins return 97.00% of the amount wagered over the long run, from the published outcome table for version 1. Across its 61 modes RTP ranges from 97.00% to 97.05%.

What is the max win in Stack Rush and how likely is it?

The top payout is 362,122× the base bet. On a base spin the top payout of 2.06× lands 1 in 5.31 spins.

Does Stack Rush have a bonus buy?

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

Is Stack Rush high or low volatility?

High. Its base-mode standard deviation is 61.0× the bet, which puts it in the highest 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.

More from Raw Fun Gaming

Crowd RushGoo Rush 2Safari Pop 3DSpinblade XHighway RushFarm Pop 3DGoo RushAll Raw Fun Gaming slots

Get an email if Stack Rush changes its RTP or modes

One email a week: new Engine slots with RTP and max-win odds, RTP changes and the most played games. Free, no casino offers on this site. Unsubscribe any time.