Casino RTP Database — Highest Payout Slots by Platform | KingPlays

Casino RTP Database

Not all casinos run the same slot at the same RTP. Providers like Pragmatic Play offer operators multiple RTP tiers — the casino chooses which one to deploy. We track which platforms offer the highest payouts.

Last updated: March 2026

Understanding RTP in Online Slots

RTP (Return to Player) is the theoretical percentage of wagered money a slot returns to players over time. A slot with 96.50% RTP will, on average, return $96.50 for every $100 wagered. The remaining 3.50% is the house edge — the casino's profit margin on that game.

The critical insight many players miss: the same slot can have different RTPs at different casinos. Most slot providers offer operators multiple RTP configurations. For example, Pragmatic Play's Gates of Olympus has a default RTP of 96.50%, but can be set to 95.50%, 94.50%, or even lower. The casino chooses the tier — and a lower RTP means more profit for the operator at your expense.

This page tracks RTP configurations across our ranked crypto casinos, so you can make informed decisions about where to play. For a deeper dive into the mathematics, read our complete RTP guide.

How the RTP Tier System Works

Provider RTP Tiers — Example

Most providers offer 3-5 RTP tiers to operators. Here is a typical Pragmatic Play slot:

Tier 1 (Default / Highest) 96.50%
Tier 2 95.50%
Tier 3 94.50%
Tier 4 (Lowest) 87.00%

The difference between Tier 1 and Tier 4 is 9.5 percentage points — meaning the casino keeps 3.5x more of your wagers at the lowest tier.

Real Impact on Your Bankroll

To understand the financial impact, consider wagering $10,000 total on a slot:

At 96.50% RTP Expected loss: $350
At 95.50% RTP Expected loss: $450
At 94.50% RTP Expected loss: $550
At 87.00% RTP Expected loss: $1,300

The lowest RTP tier costs you almost 4x more than the highest. This is why knowing your casino's RTP configuration matters.

Popular Slots — RTP by Platform

Below are observed RTP values for popular slots across our ranked crypto casinos. Values are based on the in-game RTP display and provider documentation. Where casinos do not disclose RTP in-game, we note it as "undisclosed."

Slot Provider Default RTP Stake BC.Game Cloudbet
Gates of Olympus Pragmatic Play 96.50% 96.50% 96.50% 96.50%
Sweet Bonanza Pragmatic Play 96.48% 96.48% 96.48% 96.48%
Wanted Dead or a Wild Hacksaw Gaming 96.38% 96.38% 96.38% 96.38%
Mental Nolimit City 96.08% 96.08% 96.08% 96.08%
Book of Dead Play'n GO 96.21% 96.21% 96.21% 94.25%
Big Bass Bonanza Pragmatic Play 96.71% 96.71% 96.71% 96.71%

Key finding: Crypto casinos generally run slots at default (highest) RTP. This is a significant advantage over many fiat casinos, which frequently deploy reduced RTP tiers. The exception is occasional Play'n GO titles where operators may select lower tiers.

How to Check a Slot's RTP at Your Casino

Method 1: In-Game Info

Most slots display their RTP in the game information or help menu. Look for a "?" or "i" icon, then navigate to the rules or paytable section. The RTP should be listed — this is the actual RTP running at that casino, not necessarily the default.

Works for: Pragmatic Play, Hacksaw Gaming, Nolimit City, Play'n GO

Method 2: Provider Documentation

Slot providers publish official RTP values in their game sheets. Cross-reference the in-game RTP with the provider's published default to determine if the casino is running the highest tier. If the in-game value is lower than the published default, the casino has selected a reduced configuration.

Sources: Provider websites, game review sites, regulatory databases

---- ◆ Highest RTP Casinos ◆ ----

Casinos Running Default RTP

KING'S PICK
Stake.com logo

Stake.com

4.6
♦ Min deposit: $0 ♦ Payout: Instant (crypto) ♦ License: Curacao

200% up to $1,000

40x wagering · Min $0 deposit

Cloudbet logo

Cloudbet

4.4
♦ Min deposit: $0 ♦ Payout: Instant (crypto) ♦ License: Curacao, Montenegro

100% up to 5 BTC

25x wagering · Min $0 deposit

BC.Game logo

BC.Game

4.3
♦ Min deposit: $0 ♦ Payout: Instant (crypto) ♦ License: Curacao

300% up to $20,000

40x wagering · Min $0 deposit

Wolf.bet logo

Wolf.bet

4.2
♦ Min deposit: $0 ♦ Payout: Instant (crypto) ♦ License: Curacao

100% Deposit Bonus

40x wagering · Min $0 deposit

Highest RTP Slots by Provider

Pragmatic Play

Big Bass Bonanza 96.71%
Gates of Olympus 96.50%
Sweet Bonanza 96.48%
Sugar Rush 96.50%

Hacksaw Gaming

Wanted Dead or a Wild 96.38%
Chaos Crew 96.30%
ItaRo 96.25%
Dork Unit 96.25%

Nolimit City

Mental 96.08%
San Quentin xWays 96.03%
Tombstone RIP 96.08%
Fire in the Hole 96.06%

Play'n GO

Reactoonz 2 96.20%
Book of Dead 96.21%
Moon Princess 96.20%
Rise of Olympus 96.50%

Note: Play'n GO titles have the widest RTP variance between casinos. Always check in-game.

Further Reading

RTP FAQ

Can casinos change slot RTP?

Yes. Most slot providers offer operators multiple RTP tiers. The casino selects which tier to deploy. This is why the same slot can have different payouts at different casinos. Crypto casinos generally run higher tiers than fiat casinos, but it varies. Always check the in-game RTP display.

What is a good RTP for an online slot?

Anything above 96% is considered good. The industry average is approximately 96.00-96.50%. Slots above 97% are excellent but rare. Below 95% should be avoided unless you specifically want the game's features — you are paying a significantly higher house edge.

Do crypto casinos have higher RTP than fiat casinos?

Generally, yes. Crypto casinos operate with lower overhead costs and tend to deploy slots at default (highest) RTP tiers. Many fiat casinos, especially those in regulated markets with high taxation, deploy reduced RTP tiers to maintain margins. This is one of the underappreciated advantages of crypto casinos.