RTP Differences

Slots With the Biggest RTP Gap Between Casinos in 2026

Every figure below was read from the in-game help screen at each casino. These are not estimates - they are the exact RTP that each casino has configured for each of their games. On Le Bandit, the gap between the best and worst casino is 4.17%.

4.17%

Largest gap found

14 slots

Analysed

10 casinos

Per slot

May 2026

Verified

Casinos legally choose the RTP with which to run each of their slots games. The same game will pay out at 92% at one casino, yet 96% at another - most players unaware of this will lose an extra £4.17 for every £100 wagered at the wrong casino. In the following list, we check every slot game at each of the 10 casinos and detail the RTP at every location.

To understand how slot machine casino operators decide on the RTP for each of their games, and why regulators permit such an action, please read the full explanation. For a list of the best RTP slots, ranked by the highest available RTP at any casino, see our best RTP slots list.

Le Bandit

Hacksaw Gaming

4.17% gap

92.17% (worst) 96.34% (best)

Best RTP

96.34%

Spinago, Howl

Worst RTP

92.17%

Brango, Wildz, 24 Casino, Roibets, Smokace, Neon54

6 of the 10 casinos run slots at 92.17% - more than 4% below the best available RTP. This means that players who play at the wrong casino will lose an average of £4.17 for every £100 wagered. See the full comparison chart for the RTP at all casinos for Le Bandit.

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Le Zeus

Hacksaw Gaming

3.89% gap

92.37% (worst) 96.26% (best)

Best RTP

96.26%

Howl

Worst RTP

92.37%

Brango, Wildz, 24 Casino, Smokace, Spinago, Neon54

Only Howl runs the slot at the best available RTP of 96%. Rolling Slots and Vave offer the same game at the second-best RTP of 94.18%. Six casinos run this slot at 92.37%, while Roibets does not carry the slot at all. See the full comparison chart for the RTP at all casinos for Le Zeus.

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Coin Flynn

Hacksaw Gaming

3.00% gap

Best RTP

97.00%

Brango, Rolling Slots, Smokace

Worst RTP

94.00%

24 Casino, Neon54

Coin Flynn reaches 97% at three casinos. This makes it one of the best RTP slots available. However, five casinos do not carry this game, and the other two run it at 3% less than the best available RTP. See the full comparison chart for the RTP at all casinos for Coin Flynn.

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Roxdogs

Hacksaw Gaming

2.99% gap

Best RTP

97.03%

Smokace, Vave

Worst RTP

94.04%

Rolling Slots

Roxdogs offers the highest RTP in our database at 97.03%. However, only Smokace and Vave carry this game at this rate. Rolling Slots and three other casinos offer it at 2.99% less RTP, and six casinos do not carry this game at all. See the full comparison chart for the RTP at all casinos for Roxdogs.

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Big Bass Bonanza

Pragmatic Play

2.69% gap

Best RTP

96.71%

Roibets

Worst RTP

94.02%

All 9 other casinos

Big Bass Bonanza is available at all 10 casinos. However, only Roibets features the higher RTP. Every other casino offers the same game at 2.69% less RTP. See the full comparison chart for the RTP at all casinos for Big Bass Bonanza.

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Gates of Hades

Play'n GO

2.05% gap

Best RTP

96.52%

Roibets

Worst RTP

94.47%

All 9 other casinos

Available at all 10 casinos. However, only Roibets features the higher RTP. See the full comparison chart for the RTP at all casinos for Gates of Hades.

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Sweet Bonanza 1000

Pragmatic Play

2.02% gap

Best RTP

96.53%

Roibets

Worst RTP

94.51%

All 9 other casinos

One of the most-played slots by our database. Available at all 10 casinos. However, only Roibets features the higher RTP. See the full comparison chart for the RTP at all casinos for Sweet Bonanza 1000.

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Big Bass Mission Fishin

Pragmatic Play

2.00% gap

Best RTP

96.50%

Roibets

Worst RTP

94.50%

All 9 other casinos

Same as other slots by Pragmatic Play. Only Roibets features the higher RTP. See the full comparison chart for the RTP at all casinos for Big Bass Mission Fishin.

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Sweet Rush Bonanza

Pragmatic Play

2.00% gap

Best RTP

96.50%

Roibets

Worst RTP

94.50%

All 9 other casinos

Same as other slots by Pragmatic Play. Only Roibets features the higher RTP. See the full comparison chart for the RTP at all casinos for Sweet Rush Bonanza.

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#10

The Dog House

Pragmatic Play

1.00% gap

Best RTP

96.51%

Roibets

Worst RTP

95.51%

All 9 other casinos

Despite a relatively smaller gap between the best and worst RTP for this slot, the base RTP at most casinos at 95.51% is above the average RTP for all slots in the database. See the full comparison chart for the RTP at all casinos for The Dog House.

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Slots with no RTP gap

Each of these slots feature the same RTP at every casino that carries the game. While this may seem like a missed opportunity for players to earn more money, the RTP is still a figure that should be known before playing.

Big Bass Trophy Catch

Want to know more about the reasons that the RTP can differ between casinos? Read our full explanation of how casino operators configure the RTP for each game slot on their platform.

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