Book of 99 by Relax Gaming and Mega Joker by NetEnt are tied for the highest primary theoretical RTP among records with qualifying sources at 99%. The ranking was updated 2026-09-26 and contains the top 25 primary theoretical RTP records with qualifying sources in our 2774-game database. Sponsored placements and editorial choices do not change the order. Records with unverified, missing, conflicting or manually reviewed RTP do not affect the ranking. When more than one RTP value is on record, RTP Ledger ranks the primary recorded value and shows the range separately. The primary value is not necessarily the provider default or the range maximum, and the dataset cannot identify the build that an operator runs.
These are paid partner placements, kept separate from the RTP ranking above. RTP Ledger does not claim that a partner runs the RTP value shown in this table; verify the active game version inside the casino.
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goated.com
Public welcome terms are documented. Read the evidence and confirm current eligibility with Goated.
Source checked:
RTPBOSSPublisher-supplied campaign code. It does not confirm bonus eligibility or terms.
trustdice.win
Public welcome terms are documented. Read the evidence and confirm current eligibility with TrustDice.
Source checked:
bitstarz.com
Public welcome terms are documented. Read the evidence and confirm current eligibility with Bitstarz.
Source checked:
SPINNERPublisher-supplied campaign code. It does not confirm bonus eligibility or terms.
Sponsorship never changes RTP records, source status or editorial order.
Open all casino research →Compare RTP, volatility and max win; scroll horizontally when needed
| # | |||||||
|---|---|---|---|---|---|---|---|
| 1 |  Book of 99Relax Gaming | RTP99% | Volatility | Max win12,075× | Relax Gaming | 2021 | |
| 2 |  Mega JokerNetEnt | RTP99% | Volatility | Max win200× | NetEnt | 2008 | |
| 3 |  Jackpot 6000NetEnt | RTP98.9% | Volatility | Max win600× | NetEnt | 2007 | |
| 4 |  Jack in a PotRed Tiger | RTP98.18% | Volatility | Max win1,743× | Red Tiger | 2018 | |
| 5 |  Three MusketeersRed Tiger | RTP98.18% | Volatility | Max win1,445× | Red Tiger | 2017 | |
| 6 |  Marching LegionsRelax Gaming | RTP98.12% | Volatility | Max win10,000× | Relax Gaming | 2020 | |
| 7 |  RevolveroRed Tiger | RTP98.11% | Volatility | Max win15,000× | Red Tiger | 2026 | |
| 8 |  Pearl o' Plinko - Fire & BonesQuickspin | RTP98.1% | Volatility | Max win243× | Quickspin | 2025 | |
| 9 |  Pearl o' Plinko - Mermaid CoveQuickspin | RTP98.1% | Volatility | Max win199× | Quickspin | 2024 | |
| 10 |  The CatfatherPragmatic Play | RTP98.1% | Volatility | Max win2,251× | Pragmatic Play | 2016 | |
| 11 |  Mystery Reels MegawaysRed Tiger | RTP98.06% | Volatility | Max win10,346× | Red Tiger | 2019 | |
| 12 |  1429 Uncharted SeasThunderkick | RTP98% | Volatility | Max win670× | Thunderkick | 2016 | |
| 13 |  Blood SuckersNetEnt | RTP98% | Volatility | Max win900× | NetEnt | 2009 | |
| 14 |  Codex of FortuneNetEnt | RTP98% | Volatility | Max win10,000× | NetEnt | 2021 | |
| 15 |  JokerizerYggdrasil | RTP98% | Volatility | Max win600× | Yggdrasil | 2016 | |
| 16 |  Money CartRelax Gaming | RTP98% | Volatility | Max win2,000× | Relax Gaming | 2021 | |
| 17 |  POP RoyaleAvatar UX | RTP98% | Volatility | Max win10,000× | Avatar UX | 2023 | |
| 18 |  The Slotfather JPBetsoft | RTP97.91% | Volatility | Max win— | Betsoft | 2015 | |
| 19 |  Good Girl Bad GirlBetsoft | RTP97.79% | Volatility | Max win15,600× | Betsoft | 2013 | |
| 20 |  Zeus Lightning Power ReelsRed Tiger | RTP97.73% | Volatility | Max win5,037× | Red Tiger | 2020 | |
| 21 |  Well of Wilds MegawaysRed Tiger | RTP97.71% | Volatility | Max win10,497× | Red Tiger | 2021 | |
| 22 |  Blood Suckers MegawaysRed Tiger | RTP97.66% | Volatility | Max win20,521× | Red Tiger | 2023 | |
| 23 |  Pirates Plenty MegawaysRed Tiger | RTP97.65% | Volatility | Max win10,497× | Red Tiger | 2021 | |
| 24 |  Gypsy RoseBetsoft | RTP97.63% | Volatility | Max win— | Betsoft | 2015 | |
| 25 |  Heads will RollThunderkick | RTP97.59% | Volatility | Max win2,400× | Thunderkick | 2025 |
Book of 99 by Relax Gaming and Mega Joker by NetEnt are tied for the highest primary theoretical RTP among records with qualifying sources at 99%. Jackpot 6000 by NetEnt is the next distinct value at 98.9%. The ranking compares only slot records and their primary RTP values in the RTP Ledger dataset.
Not automatically. RTP is a theoretical long-run average, not a prediction for one session. Volatility is a separate qualitative label, the operator may run a different RTP version, and the record may have limited source history. Check both the data-status panel and the in-game rules.
RTP Ledger sometimes has more than one RTP value on record for a game. The recorded RTP values may relate to different builds or configurations, but the dataset alone cannot identify which one a casino runs. Open the in-game paytable or info screen to see the active figure.
Methodology: a ranked row needs an official source or a qualifying dated secondary-source snapshot for its primary RTP. The slot page must also contain enough documented data for publication. Records with unverified, missing, conflicting or manually reviewed primary RTP remain in the full database. They do not appear in this ranking. Read What is RTP? for how to interpret them. 18+ · Play responsibly.