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Put a 99% RTP slot up against a 500,000x max win and see how the same 4,000 sessions end on each. Swap in any of 17 games, then set your own budget and bet.
300 spins at $0.50 is $150 in bets on each slot.
Book of 99 ended ahead in 34% of sessions and Tombstone Slaughter in 20%. Tombstone Slaughter landed a 1,000x+ win in 3.8% of sessions, against 1% for Book of 99.
| Result | Book of 9999% RTP · 5,000x max · 29.83% hit rate | Tombstone Slaughter96% RTP · 500,000x max · 9.39% hit rate |
|---|---|---|
| Ended aheadabove your bankroll at the end | 34% | 20% |
| Ran out of moneybefore the last spin | 0.3% | 36% |
| Typical finishthe median session | $75 | $21 |
| Average costhouse edge on your bets | $1.50 | $5.68 |
| Hit a 100x+ winon a single spin | 37% | 41% |
| Hit a 1,000x+ winon a single spin | 1% | 3.8% |
We haven’t checked Tombstone Slaughter at a casino we review. Closest one we have: Mystic Charms at MyBookie, 96% RTP and 30,000x max.
How the duel works: each game gets a payout table built from its published RTP, hit rate and max win, and the spread of wins comes from its volatility rating. BGaming lists hit-rate figures for Wild Tiger and Keepers of the Secret without a unit and TrueLab lists none for Mystic Charms, so those three use 40%, 25% and 25%, our estimates from games with similar volatility. Tiger’s Luck is capped at 6,366x, the figure SlotsTemple lists, because Betsoft doesn’t publish one. Both slots get the same random draws in each of the 4,000 sessions, so neither side gets luckier spins. It’s a model of each game’s risk, not its real paytable.
By Mark Taylor, updated There are three different answers to “which slot pays the most?” Book of 99 and Mega Joker lead these highest payout slots on published RTP at 99%. Tombstone Slaughter has the largest sourced non-progressive ceiling at 500,000x, while Mystic Charms is my best overall casino-linked test because it combines a 30,000x maximum with selectable risk modes and retained session evidence.
RTP measures the long-run cost of playing, and Mega Joker’s 99% depends on Supermeter play. Maximum win is only the game ceiling, and volatility tells you how uneven the journey can be. The percentage shown inside the exact game takes priority because casinos can run different approved versions. For a broader choice of sites and games, use our real money slots guide.
The duel above shows what that means for your money. With $100 at $0.50 a spin over 300 spins, Book of 99 ended ahead in 34% of sessions and Tombstone Slaughter in 20%. Tombstone ran out of money in 36% of them, but it landed a 1,000x+ win in 3.8% of sessions, more than three times as often as Book of 99. And if a big win does land, the casino’s weekly limit decides how fast you see it: a $30,000 win can take one week or fifteen.
Five games we tested at casinos we review, each picked for a different style of play rather than RTP alone. Tap Duel to test any of them against another slot.
#1Switch between a steadier Deluxe mode and an Extreme mode that puts more of the return into the feature.
Recorded session: a $9,800 win.
#2Jaguar multiplier wilds and sticky free-spin wilds.
Recorded session: $1,480 from a $5 stake.
#3Adjustable paylines with a medium-low volatility model.
Recorded session: $275 from a $1.60 spin.
#4A 243-ways game with a Hold and Win bonus.
Recorded session: $410 from a $2 stake.
#5Collection symbols and sticky wilds drive the feature.
Written session log: a $35,000 win, stake not recorded.
Search the casino lobby for the game and check its RTP setting in the info screen. Recorded wins are single sessions, not typical returns.
The phrase can mean the lowest house edge, the largest possible multiplier or the strongest game we have tested at a reviewed casino. Those are different comparisons.
Best for reducing the theoretical long-run house edge.
A huge ceiling with extreme volatility and no promise of reaching it.
Two risk modes, a retained session image and a reviewed casino route.
These slot payout percentages put long-run return first. Compare the RTP with each game’s volatility, hit rate and maximum win. The casino’s information screen shows the version available to you.
| Slot and provider | RTP | Volatility | Hit rate | Max win | Test it |
|---|---|---|---|---|---|
| Book of 99Relax Gaming | 99.00% | High | 29.83% | 5,000x | Duel Book of 99 |
| Mega JokerNetEnt | 99.00%Supermeter | High | 17% | 200x | Not in the duel |
| 1429 Uncharted SeasThunderkick | 98.60% | Low | 41.2% | 670x | Duel 1429 Uncharted Seas |
| Marching LegionsRelax Gaming | 98.12% | High | 25.62% | 10,000x | Duel Marching Legions |
| Blood SuckersNetEnt | 98.00% | Low | 45% | 900x | Duel Blood Suckers |
Mega Joker’s 99% depends on Supermeter play, and SlotCatalog puts its return at the minimum bet at 76.9%, which is why it isn’t in the duel. A high RTP and a large maximum win are separate advantages: Book of 99 tops out at 5,000x, and Blood Suckers at 900x.
A closer look at the five tested picks: how the features play, their payout percentages and the results recorded in our sessions.
Mystic Charms offers more range than a standard one-model slot. Deluxe mode is the steadier route, while Extreme mode puts more of the return into the feature and larger multiplier combinations.
Recorded session: the written log records the Deluxe free-spins feature triggering on spin 112 and a $9,800 win. A separate Extreme feature-buy check cost 230x the stake and returned 220x within five spins. Those are different events, not an average return.
Mystic Charms was also seen at BUSR, but search the live lobby before funding an account for one game.
Duel check: with $100 at $1 a spin over 300 spins, Mystic Charms ended ahead in 26% of sessions and ran out of money in 48%. It landed a 1,000x+ win in 1% of them. Try it in the duel
A 30,000x ceiling with Deluxe and Extreme modes gives you two ways to play.
Extreme mode can empty a small balance quickly, and 96% remains below the pure RTP leaders.
Keepers of the Secret is the strongest mathematical all-rounder in the tested group. The 97.02% RTP is unusually high for a modern feature slot, while the 10,000x ceiling leaves real upside.
Recorded session: the session notes record 12 free spins triggering after 48 base spins. Jaguar multiplier wilds then produced a $1,480 win from a $5 stake, equal to 296x. The screenshot and written timing notes were retained.
The BGaming casino comparison is useful when this title is unavailable in the first lobby checked.
Duel check: with $100 at $1 a spin over 300 spins, Keepers of the Secret ended ahead in 27% of sessions and ran out of money in 47%. It landed a 1,000x+ win in 1.1% of them. Try it in the duel
It gives up less theoretical return than the other high-ceiling tested games without dropping to a small classic-slot maximum.
It is still high risk, and the game is not present in every BGaming integration.
Wild Tiger is the sensible alternative to the extreme max-win games. Its 97.16% RTP and medium-low model give a smaller balance a better chance of lasting, although adding more active lines raises the total stake.
Recorded session: the session returned $275 from a $1.60 spin after two Tiger wilds stacked.
Wild Casino is the top pick in our real money slots guide, but the live search result inside its lobby is what matters for this exact game.
Duel check: with $100 at $1 a spin over 300 spins, Wild Tiger ended ahead in 37% of sessions and ran out of money in 12%. It landed a 1,000x+ win in <0.1% of them. Try it in the duel
It has the highest published RTP in the tested casino-linked shortlist and, with Super Golden Dragon Inferno, the lowest volatility rating.
The 3,000x ceiling is modest beside Mystic Charms, Keepers and the extreme max-win titles.
Super Golden Dragon Inferno combines a 243-ways base game with a Hold and Win feature. Betsoft lists a 63.89% hit rate, so something pays on most spins, and its medium-low volatility makes it the steadier of our two Betsoft picks.
Recorded session: the written log records the Hold and Win round triggering after 77 spins and returning $410 from a $2 stake, a 205x result. The screenshot, feature timing and stake were retained.
See how the software compares across the current Betsoft casino list.
Duel check: with $100 at $1 a spin over 300 spins, Super Golden Dragon Inferno ended ahead in 34% of sessions and ran out of money in 3.1%. None of them landed a 1,000x+ win. Try it in the duel
It is the more playable Betsoft option for someone who wants regular movement rather than a 30,000x chase.
The 2,916x maximum is much lower than the headline games above it.
Tiger’s Luck is the roughest game in the tested five. Betsoft publishes a very-high-risk model, and most of the attraction sits in the Hold and Win round with its collection symbol and sticky wilds.
Recorded session: the session log records that the bonus triggered on spin 63 and produced a $35,000 win when the red collection coin gathered the visible values. The original stake and a separate winning screenshot were not retained, so the result is not converted into a multiplier.
The full Betsoft guide gives alternative casinos and games when this one isn’t in your casino’s lobby.
Duel check: with $100 at $1 a spin over 300 spins, Tiger’s Luck ended ahead in 24% of sessions and ran out of money in 56%. It landed a 1,000x+ win in 1.8% of them. Try it in the duel
The collection symbol and sticky wilds give the Hold and Win feature its appeal, with a 96.52% published RTP.
Very high volatility means long dry spells, and Betsoft doesn’t publish a max win.
Compare the highest paying slots by their maximum multipliers. These are game limits, not average wins, and availability differs from the casino-linked picks above.
| Slot and provider | RTP | Max win | Hit rate | Practical reading | Test it |
|---|---|---|---|---|---|
| Tombstone SlaughterNolimit City | 96.00% | 500,000x | 9.39% | Largest maximum in this comparison. | Duel Tombstone Slaughter |
| Tombstone R.I.P.Nolimit City | 96.08% | 300,000x | 9.08% | A 300,000x limit and a hit rate under 10%. | Duel Tombstone R.I.P. |
| San Quentin 2: Death RowNolimit City | 96.13% | 200,000x | 26.9% | Prison-themed sequel with a 200,000x maximum. | Duel San Quentin 2: Death Row |
| San Quentin xWaysNolimit City | 96.03% | 150,000x | 34.25% | The original prison slot still sits far above most standard ceilings. | Duel San Quentin xWays |
| Deadwood R.I.P.Nolimit City | 96.09% | 100,000x | 8.29% | A six-figure multiplier without using a progressive jackpot. | Duel Deadwood R.I.P. |
Nolimit City supplies some of these games at more than one RTP. Tombstone Slaughter’s top setting is 96.00%, and it also comes at 94.08%, 92.05% and 87.06%. Tombstone R.I.P. has a 94.08% version and San Quentin xWays a 94.11% one. Open the game’s info screen to see which one your casino runs.
A huge ceiling comes with long dry spells. In the duel, with $100 at $1 a spin over 300 spins, Tombstone Slaughter ran out of money in 78% of sessions and Book of 99 in 39%.
A bonus buy lets you pay a set price, a multiple of your stake, to skip straight to the feature. The buy has its own RTP, and it isn’t always lower than the base game. Here are 18 feature buys with a published buy RTP, highest first.
| Slot | Feature buy | Price | Buy RTP | Base game RTP | Average loss per buy at $1 |
|---|---|---|---|---|---|
| Marching Legions | Free spins buy | 120x | 97.13% | 98.12% −0.99 | $3.44 |
| Tombstone R.I.P. | Boothill | 3,000x | 97.03% | 96.08% +0.95 | $89.10 |
| San Quentin xWays | 5 bonus symbols | 2,000x | 96.95% | 96.03% +0.92 | $61.00 |
| Tombstone R.I.P. | Hang ’em High | 70x | 96.47% | 96.08% +0.39 | $2.47 |
| San Quentin 2: Death Row | Green Mile Spins, 1 Jumping Wild | 100x | 96.27% | 96.13% +0.14 | $3.73 |
| San Quentin xWays | 3 bonus symbols | 100x | 96.26% | 96.03% +0.23 | $3.74 |
| San Quentin xWays | 4 bonus symbols | 400x | 96.26% | 96.03% +0.23 | $14.96 |
| Deadwood R.I.P. | Salvation Spins | 1,500x | 96.24% | 96.09% +0.15 | $56.40 |
| San Quentin 2: Death Row | Lucky Draw | 580x | 96.23% | 96.13% +0.10 | $21.87 |
| Deadwood R.I.P. | 50-50 Lucky Draw | 790x | 96.23% | 96.09% +0.14 | $29.78 |
| Most Wanted | Free spins buy | 100x | 96.18% | 96.05% +0.13 | $3.82 |
| Deadwood R.I.P. | Redemption Spins | 80x | 96.18% | 96.09% +0.09 | $3.06 |
| San Quentin 2: Death Row | Green Mile Spins, 2 Jumping Wilds | 500x | 96.18% | 96.13% +0.05 | $19.10 |
| San Quentin 2: Death Row | Green Mile Spins, 3 Jumping Wilds | 2,500x | 96.18% | 96.13% +0.05 | $95.50 |
| Tombstone Slaughter | Massacre Spins | 5,000x | 96.15% | 96.00% +0.15 | $192.50 |
| Deadwood R.I.P. | 80-20 Lucky Draw | 364x | 96.13% | 96.09% +0.04 | $14.09 |
| Tombstone Slaughter | Lucky Draw | 572x | 96.11% | 96.00% +0.11 | $22.25 |
| Tombstone Slaughter | Slaughter Spins | 80x | 96.10% | 96.00% +0.10 | $3.12 |
Some buys pay back more than spinning: Tombstone R.I.P.’s Boothill returns 97.03% against 96.08% for normal play, and San Quentin xWays’ 5-bonus-symbol buy 96.95%. Marching Legions works the other way, with a 97.13% buy below its 98.12% base game. The catch is size. One Massacre Spins buy at $1 costs $5,000, and even at 96.15% the average loss on it is $192.50.
Keepers of the Secret, Tiger’s Luck, Rise of Triton and Mystic Charms sell their features too, but their providers don’t publish a buy RTP. Check the bonus terms before you buy with bonus money: Slots Paradise’s welcome codes don’t count bonus-buy slots, and many casinos have the same rule.
Compare the games by RTP, volatility and maximum win, and see which casino we link for each one. The progressive entries are jackpot picks rather than leaders on payout percentage.
Jackpot values and game availability change. Open the current lobby and game information before choosing a casino for a specific title. RTG doesn’t publish RTPs for Achilles Deluxe or Plentiful Treasure, so check the info screen in the casino.
Already playing at one of these casinos? This is the highest-RTP slot we point players to there, with the RTP we recorded or the provider publishes. Casinos can run a lower version, so check the game’s info screen in the lobby before you play.
| Casino | Slot to look for | RTP | Volatility | What stands out |
|---|---|---|---|---|
| Wild Casino | Wild Tiger | 97.16% | Medium-low | 100 adjustable lines, 3,000x max |
| Love2Play | Keepers of the Secret | 97.02% | High | 10,000x max, jaguar multiplier wilds |
| Slots Paradise | Wild Diamond 7x | 96.69% | Medium | Classic three reels, 7x wild multiplier |
| Super Slots | Tiger’s Luck | 96.52% | Very high | Hold and Win with a collection coin |
| BUSR | 777 Deluxe | 96.18% | High | Hot Drop jackpot version |
| Ignition | Take the Bank | 96.08% | Medium | Ten-spin feature progression |
| MyBookie | Mystic Charms | 96.00% | Medium / high | Deluxe and Extreme modes, 30,000x max |
| Cherry Jackpot | Masks of Atlantis | 96.00% | Medium | 50,000x the line bet, about 2,500x on 20 lines |
| Cafe Casino | ChilliPop | 95.38% | High | Cluster pays on an expanding grid |
| SlotsRoom | Shopping Spree | 95.30% | Not listed | Fixed-line progressive jackpot |
There’s no CasinoMax row because we haven’t recorded a game’s RTP screen there yet. CasinoMax’s own fair gaming page lists a 94% return across its Real Series video slots over the past 12 months. For more games and sites, see our real money slots guide.
Win with cash at a real money casino and the money is yours to withdraw, but how fast it reaches you is the casino’s call. Weekly limits decide how long a big win takes. A 30,000x hit on Mystic Charms at $1 is $30,000, which comes out in the first week at some casinos and in weekly installments for months at others.
A $30,000 win fits in the first week at Cafe Casino and Ignition. At BUSR it takes 15 weeks.
Weeks needed to withdraw the whole win at each casino’s published limit, using Bitcoin. The first payment still needs the casino’s approval and any ID check. Our test is one recorded withdrawal, from request to wallet.
These casinos don’t publish a weekly Bitcoin cap, so the limit to check is a different one:
Progressive jackpots can work differently: CasinoMax, Cherry Jackpot and SlotsRoom treat network progressive jackpots separately from their weekly limits. Finish your ID check before you chase a big win, so the first payment isn’t held up. For the full speed ranking, see our instant withdrawal casinos, or compare Bitcoin casinos by limits and fees.
Progressives are chosen for the changing jackpot rather than the highest base-game payout percentage. Compare the listed returns and the type of jackpot.
We checked this version at MyBookie. The Cafe version showed 92.50%, so open the info screen first.
A steadier old-school setup with a lower return than the RTP leaders.
The jackpot amount changes with the pool.
The jackpot value changes and bonus rules can restrict the game.
These four numbers answer different questions. A higher RTP reduces the theoretical cost when everything else is equal. Volatility describes how uneven the returns are. Hit rate counts every win, including results smaller than the stake. Maximum win is only the ceiling.
Choose the higher configuration when the games are otherwise similar and your main aim is lower long-run cost.
A small bankroll usually lasts longer on low or medium-risk games, even when a high-risk title has a larger maximum.
Hit rate changes how a session feels. Super Golden Dragon Inferno pays something on 63.89% of spins and Tombstone Slaughter on 9.39%. In the duel, with $100 at $1 a spin over 300 spins, Super Golden Dragon Inferno ran out of money in 3.1% of sessions and Tombstone Slaughter in 78%, even though their RTPs are less than half a point apart.
Open the information screen before every real-money session. For a deeper budget explanation, read how slot volatility changes the stake you can sensibly use.
The CasinoWhizz notes cover at least 500 spins on each of the five tested picks, including feature timing, the largest recorded win and the stake where recorded. They describe individual sessions, not a measurement of long-run RTP.
Mystic Charms, Keepers of the Secret, Wild Tiger and Super Golden Dragon Inferno have screenshots and session notes. Tiger’s Luck has a written win record without the original stake or a separate winning image.
RTP matters most when you’re clearing a bonus, because you bet the same money over and over. Take Red Dog’s VAGGINGTAILS: a $100 deposit gets a $225 bonus ($245 with crypto), and 35x wagering on the $325 deposit plus bonus means $11,375 in bets ($12,075 with crypto). This is what that wagering costs on average at different RTPs.
At 96%, the average cost of that wagering is more than the whole $325 balance, and the gap between a 96% and a 99% game is $341.25. VAGGINGTAILS also limits you to a $10 maximum bet while the bonus is active. That’s why the RTP of the games you’re allowed to play matters so much, and why casinos often exclude high-RTP games or count them at a lower rate. Open the game restrictions attached to your casino bonus code before you play. Love2Play’s WHIZZL2P, for example, needs 40x the bonus plus the deposit, and the bonus is cashable once you finish. Playing with your cash balance keeps the game choice separate from bonus wagering.
A large game result still has to pass through the casino cashier. Compare casinos ranked by completed withdrawal time before leaving a large balance online.
A higher RTP does not remove the house edge, and a huge maximum does not make the top result likely. Set the stake, loss limit and time before starting, and run your numbers through the duel first. Do not buy another feature to recover the cost of the last one.
Free, confidential help is available 24/7 in the US: call or text 1-800-MY-RESET or visit NCPG. You can also read the CasinoWhizz responsible gambling guide.
Answers about slot payout percentages, maximum wins, volatility, bonus buys and cashing out.
Book of 99 and Mega Joker lead this comparison at 99% RTP. Mega Joker reaches that figure through its Supermeter setup, and casino configurations can vary, so check the information screen before playing.
Tombstone Slaughter has the largest maximum in this comparison at 500,000 times the stake. It is a game ceiling, not a likely or average result.
Mystic Charms is the overall tested pick for its 30,000x maximum and selectable Deluxe and Extreme modes. Wild Tiger has the highest published RTP in the five-game shortlist at 97.16%, with a medium-low volatility model.
Not necessarily. RTP measures the designed long-run return, while maximum win measures the largest permitted result. A 99% classic can have a much smaller ceiling than a 96% extreme slot.
RTP is the percentage a slot is designed to return over a very large amount of play. Maximum win is the largest payout allowed by the game. Neither number predicts the next spin.
No. A 99% RTP still includes a theoretical house edge and only describes a very long run. A short session can finish far above or below the published figure, including a complete loss.
Yes. Providers can supply several approved configurations and the casino selects the version it runs. Tombstone Slaughter, for example, comes at 96.00%, 94.08%, 92.05% and 87.06%. The percentage shown inside the exact game takes priority over a review or provider headline.
Open the paytable, help menu or game information screen and look for Return to Player, theoretical return or RTP. Check again when moving the same title to another casino.
They often are. A casino may exclude the game, give it zero wagering contribution or apply a lower maximum bet. Read the restricted-games list attached to the exact promotion.
No. Hit frequency counts every winning spin, including returns smaller than the stake. A busy low-value game can have the same or a lower RTP than a game with fewer wins.
Not always. The quoted RTP depends on the game and whether jackpot contributions are included. Compare the exact figures rather than assuming a larger jackpot means a higher payout percentage.
No. A 500-spin test can document one session, feature timing and the largest recorded result. It is far too small to validate the official RTP, hit frequency or maximum-win probability.
It depends on the casino’s weekly limit. Cafe Casino allows up to $100,000 a week in Bitcoin and Ignition $90,000, so a $30,000 win can come out in the first week. MyBookie allows one $5,000 Bitcoin withdrawal a week, and BUSR’s payout FAQ limits casino winnings to $2,000 every seven days, so the same win takes 6 weeks at MyBookie and 15 weeks at BUSR.
Sometimes. Tombstone R.I.P.’s Boothill buy returns 97.03% against 96.08% for normal spins, but Marching Legions’ free spins buy returns 97.13%, below its 98.12% base game. Check the buy RTP in the game’s info screen before you pay for a feature.
The share of spins that pay anything, including wins smaller than your bet. Super Golden Dragon Inferno lists 63.89% and Tombstone Slaughter 9.39%. A low hit rate with a huge max win usually means long losing runs.
