poker table

List of Slots with 99% RTP

Discover the best slots with 99% RTP and find out where you can play them. On this page, we analyze the very best slots with 99% RTP and peek at what kinds of bonuses and features they have.

Playing online slot games is as easy as matching the bet size and clicking the spin button. This makes them among the popular games played at online casinos by every type of player, including beginners. But as you understand them better, you will discover some aspects that determine your payout, including slot RTP.

99% RTP Slots Guide

Slots With 99% RTP

Our slot games guide focuses on Return to Player (RTP) percentage, with a review of high RTP slots. A high RTP slot is a slot game with an RTP closer to 100%. But while most online slots average 94%+, can you get online slots with an RTP of 99%? The answer is yes, and we will provide a list for you since such information is scanty across many online slot sites in the gambling industry.

Tip: Some of these highest RTP slots have an initial rate lower than 99%, but activating some features or high-roller bets takes the payout percentage in these online slots to 99%+.

ūüéįSlot GameūüßĎ‚ÄćūüíĽSlot ProvidersūüíĮRTPūüŹ†House Edge
Book of 99Relax Gaming99%1%
Mega JokerNetEnt99%1%
Goblin’s CavePlaytech99.32%0.68%
Ugga BuggaPlaytech99.17%0.83%
Ocean PrincessPlaytech99.07%0.93%
Tropic ReelsPlaytech99%1%
Ooh Aah DraculaBarcrest99%1%
Monopoly Big EventBarcrest99%1%
Nemo’s VoyageWMS99%1%
Fruity Beats XtremeSpinmatic99.08%0.92%

Online Casinos with 99% RTP slots

Promocode: No Code Required
1000 ratings
Get A 100% New Player Bonus
  • Easy to use
  • Reliable operator
  • Wide range of games
Must be 21+ and present in NJ. Gambling problem? Call 1-800-GAMBLER. New customers only. Deposit between $10 and $1000. Bonus will be matched to qualifying deposit. Value of deposit plus bonus must be wagered 20 times. Time limits and T&Cs apply.
4532 ratings
100% Bonus Up To $500
  • Games choice
  • Rewards program
Must be 21+. NJ only. New Customers Only (If applicable). Please Gamble Responsibly. Visit for Terms and Conditions. All promotions are subject to qualification and eligibility requirements. Rewards issued as non-withdrawable site credit unless otherwise provided in the applicable terms. Rewards subject to expiry.

Wondering where to find high RTP slots with 99% RTP? We point you to the legal online casinos where you can find the games.

What is the RTP Meaning in Slots?

RTP is a common name you will come across in slot machines. RTP refers to the return to player percentage, representing the average returns a slot machine pays out as winnings. The rate is given in percentage and cannot exceed 100%.

The higher the RTP, the more the chances of winnings and profit value. Then comes another terminology, house edge. It represents the advantage the house has over you in the game. For example, in the Mega Joker slot from NetEnt, the RTP is 99%, bringing the house edge to 1%.

But, while at it, it is essential to note that RTP is the average payout percentage garnered over time after countless spins. And with RNG employed to determine outcomes in slot games at random, you do not expect the slot to payout after each spin.

Is a 99% Slot RTP High?

Yes. These are the highest RTP slots you can find online. It is the highest RTP you can get on a slot game since you will never find a 100% RTP slot machine. Adding to them are other features that can also influence your gaming experience and, while at it, offer the avenue to make even higher payouts compared to the base game. For example, you may have a progressive jackpot feature that, besides the excitement, offers the chance to win big sums of money.

The average RTP of online slots is between 94%-96%, which supports our notion that a 99% slot is the highest slot game you can find online.

5 Top 99% RTP Online Slots

Slot machines are served differently to players. Some are more interested in classic slots to reminisce about the old times. In contrast, others prefer modern slot games for the special bonus symbols, different gameplay mechanics from the reels, paylines, and themes, innovative and highly-rated features like progressive jackpots, and higher max bet.

Players interested in playing slots with 99% RTP will find a blend of all, and below is our pick of the five (5) most popular slot titles:

  1. ūü•áGoblin‚Äôs Cave
  2. ūü•ąUgga Bugga
  3. ūü•ČMega Joker
  4. ūüéĖÔłŹBook of 99
  5. ūüŹÖOcean Princess

Goblin’s Cave

goblin's cave slot game

  • Provider: Playtech
  • Reels: 3
  • Paylines: 3
  • RTP: 99.32%
  • Volatility: Medium

Goblin’s Cave is the highest RTP slot game, with its RTP set at 99.32%. Besides its RTP, it is a simple cosmic-style online slot from Playtech, featuring three reels and three paylines, with medium volatility, and the max payout capped at 150x your bet. One highlight is that it is a perfect option for low-stakes players.

The downsides are that the slot game has poor graphics and misses bonus slot features like bonus spins. The available ones include bonus rounds¬†activated after three (3) lanterns (scatters) and the¬†hold symbol¬†feature. The hold feature lets you ‚Äėhold‚Äô the selected symbol on a spin, copying them on the other two reels, allowing a re-spin.

Ugga Bugga

ugga bugga slot game

  • Provider: Playtech
  • Reels: 3
  • Paylines: 10
  • RTP: 99.07%
  • Volatility: Low

Ugga Bugga from Playtech is another high RTP slot game, with its RTP set at 99.07%. The tribal-themed online slot features simple gameplay with three (3) reels and ten (10) paylines but a rather complicated paytable. While it is not a low RTP game, it is a low volatility slot, with its max winnings capped at 5,000x your bet.

You will not find a progressive jackpot, a bonus round, or bonus spins features, but wild symbols, a hold symbol feature, respins, and multipliers are on board. One thing plain to notice is that Playtech focuses much on the slot’s unique mechanism, where you play ten (10) games simultaneously, with the avenue to make up to 23 possible winning combinations.

Mega Joker

mega joker slot game

  • Provider: NetEnt
  • Reels: 3
  • Paylines: 5
  • RTP: 99%
  • Volatility: High

Mega Joker adds to the list of online slot games with a high RTP of 99%. The slot from NetEnt is among the best RTP slots to play at DraftKings and Golden Nugget. The retro-themed high volatility slot game features three (3) reels and five (5) paylines, with a betting range of between $0.1-$10 and a maximum amount to win capped at 4,000x your bet.

Besides the low-quality graphics and missing bonus spins and bonus games, it is one of the high RTP progressive slots. You will come across a supermeter feature, allowing you to gamble your winnings for bigger prizes and a mystery win of up to 2,000 coins after landing a Mega Joker symbol.

Book of 99

book of 99 slot game

  • Provider: Relax Gaming
  • Reels: 5
  • Paylines: 10
  • RTP: 99%
  • Volatility: High

Book of 99 is one of the Relax Gaming high RTP slot games available for play, either in demo or real-money mode, for those looking to win real money playing slots. Adding to it is that it is an online slot famed for high payouts of 5,000x your bet. The Greek Mythology-themed high-payout slot game features five reels and ten paylines and is highly volatile.

Like many video slots, you can expect top-notch graphics and several bonus symbols and features, like wild symbols, scatters, and bonus spins. You will have ten (10) bonus spins triggered after landing 3+ scatters. During the bonus spins round, a selected special expanding symbol will help fill the reels and form more winning combinations.

Monopoly Big Event

monopoly big event slot game

  • Provider: Barcrest
  • Reels: 5
  • Paylines: 20
  • RTP: 99%
  • Volatility: Medium

Available in casinos like BetMGM, Borgata, and 888 Casino, Monopoly Big Event is one of the slot games you start playing with an RTP of 96% but can elevate it up to 99% using special side bets. The medium-volatile five reel, 20-payline slot features a branded theme with a bet amount of between $0.20-$500 and its highest payout at 2,000x your bet.

You will have wild symbols and scatters to trigger bonus rounds with bonus spins attached. 4+ bonus symbols trigger more bonus games. And similar to most popular slots from this slot software provider, the Big Bet option is available. You will either buy and play five (5) premium spins at $20 and have progressing multipliers of up to 5x on each spin or buy the five at $30 and have a bonus wheel to help choose a modifier.

Downsides with 99% RTP Slots

While the highest RTP slots are all about high odds of winning valuable profits, there are a few downsides related to these slots. They include:

  • Playthrough/Wagering requirements: It is rare to find an online casino offering high RTP slot games of 99% payouts as¬†eligible¬†games while fulfilling the bonus playthrough requirements. If available, they will contribute a¬†low percentage, not 100%, as most online slots do.
  • Rare in the US: Despite being provided by popular providers, high RTP slots are unavailable in most legal online casinos, with just a few slot games like¬†Mega Joker¬†and¬†Monopoly Big Event¬†available.
  • Volatility: Another aspect to consider as you play slots is volatility, which might be overlooked on the high RTP slots. If you are there for¬†short-term¬†gains, a low volatile slot is the best option, even if it means playing low RTP slots. However, players with¬†bigger bankrolls¬†motivated by huge cash prizes in profits, however long they take, can consider the highest RTP slot games with high volatility.
  • Varying RTP: While our list contains top RTP slots, not all have the RTP at 99% on the base game. As such, you must make¬†special bets¬†that require more money off your bankroll.
  • Few bonus features: As seen, most slots with a 99% player percentage have¬†limited¬†bonus features. They lack innovative features like tumble reels,¬†megaways, etc., with others lacking basic ones like a bonus game,¬†bonus buy, and bonus spins.
  • Limited selection: Not many highest RTP slots are available, with most slots averaging 94%-96% RTP. You are likely to find one or two at your online casino.


The end goal of any slot lover is to record more wins on a slot game, and nothing beats trying that on the highest RTP slot games on our list. They offer the best chances of winning over time. But as seen, there are highs and lows of it.

As we stated, payouts at online casinos depend on many aspects besides a slot RTP. While the best RTP slots provide more chances of winning, the payout value also boils down to other aspects like volatility and features. And unfortunately, there are not many selections of slot games with an RTP of 99%. To that end, you can have a look at 98% RTP slots, 97% RTP slots, or even games with 91% RTP that can still bring good returns!