Best High RTP Slots at Sweepstakes Casinos

Book of 99 is an ancient Greek-themed slot from Relax Gaming’s Book of series, featuring the classic expanding symbols feature. And the clue is in the name – this slot has a whopping 99% RTP AKA the highest we’ve ever seen!

The number 99 is referenced in the base game’s Collection Meter too, which moves up a notch every time you land a wild. Once the meter is full, you enter the bonus round – it’s neat to have this overarching feeling of progress that many slots lack.

During the bonus, a random symbol is chosen as the special expanding symbol. Now, when this symbol appears on a payline, it expands, creating even more chances to win. The maximum possible win of 12,075x is great too. You can play this atmospheric, list-topping title at Crown Coins.

The second game on our list clocks in at a gigantic 98.12% RTP and has a lot in common with Book of 99. It’s from Relax Gaming, uses a collect meter, and has an ancient setting, but this time we’re heading to the Roman Empire.

There are various symbols at play, but the one that matters is the legionary. The goal is to land 3 of these guys on one reel and have them march to the left, off the grid, and into battle, triggering respins along the way. Once this has happened enough times to fill the collect meter, you’ll enter the bonus round, where you need to land more reels of soldiers, plus the horn symbol, to continue.

You’re basically looking out for one symbol for the most part, which leads to a binary feel. However, the blocky cartoon aesthetic and the way the legionaries march off to battle has a unique charm. If you’d like to play Marching Legions, Pulsz is a great casino for it.

Here we have a clone of Gates of Olympus, one of the most popular slots ever, but the 98% RTP on Gates of Heaven makes it a better-paying alternative.

The game mechanic is one we’re used to: tumbling reels with scatter symbols that then trigger a bonus round full of multipliers. The Zeus in heaven aesthetic is common too, but the deity in this game is carrying a spear and wearing some different attire, so it might not be Zeus…

If you’re a beginner player, you should get the hang of the relatively simple flow fast. Or, if you’re going to play Gates of Olympus, you should play this instead. The max win is the same at 5000x, as is the high volatility, but the RTP is 1.5% higher, and that could count for something. You’ll find Gates of Heaven at Stake.us; in fact, it’s a Stake exclusive!

Here’s another Stake.us exclusive from Pragmatic sitting pretty high at 98% RTP, and it’s our first Megaways slot on the list.

If you like silly-looking dogs, you will quickly warm to Dog Mansion Megaways. It’s the sequel to 2019’s The Dog House but with a Megaways feature, and its lack of a cascade/tumble mechanic makes it one of the few non-tumbling Megaways available.

Don’t let the cute visuals and music fool you though; this game is highly volatile and, with no tumbling, it’s hard as nails. Bonus symbols are few and far between, so you might end up having to buy the bonus. But when you do, the game really comes alive and you get a choice between Sticky Wilds or Raining Wilds/more spins (we prefer the former).

If you like slots with plenty of personality and crazy catchy music, head over to Stake.us and take these good boys for a spin. It has a max win of 18,058x too!

Even at number 5 on our list, we’re still at the heady heights of 98% RTP, and if you’re a fan of steampunk or Mad Max-style worlds, you’ll likely dig the vibe of Money Cart 2.

The focus of the base game is simply triggering a bonus round, which might seem a little strange. However, when you realize this is an offshoot of Money Train 2 – essentially taking its famously good Hold & Win round and giving it a higher RTP – it makes more sense. With greasy, steampunk characters who pop up and modify your total, and sticks of dynamite that explode and add more reels to the grid, you have a really exciting slot.

Why not give it a shot over at McLuck casino, where you can also play its sequels, plus its prequel (Money Cart) which was released after number 2! Yes, it’s confusing, and Money Cart also has a 98% RTP, but, to be clear, Money Cart 2 is the best of this bunch.

If modern slots are too hectic for you, you might appreciate Lucky Lady’s Clover. Not only does it hark back to older slots with its gameplay, the setting of a lush Irish forest with minimal sounds makes it a relaxing play. It’s also the first title on our list with medium volatility, rather than high, making it a better option for playing through bonus coins.

The base game has simple paylines, a scatter and a wild symbol (the Lucky Lady herself). But the fun part is that after every win, you’re given the chance to multiply it via a game of guessing cards (by color or suit). Of course, if you guess wrong you lose the win completely, but it’s great to have this side game.

The graphics and gameplay might be a little basic for some, but if you want something more old-school with a great RTP, head to Mega Bonanza to give this a try.

Speaking of more classic slots, Gold Train takes it back to the original fruit machine style with its base game. It’s a 3 x 3 grid here with just 3 paylines, but the train-themed bonus feature helps keep things interesting.

Landing an upgrade symbol adds carriages onto your train in the top left corner, and when a train ride is triggered by 3 scatter tickets, those carriages full of coins fly past the screen, dropping off loot. Of course, the more you’ve built up, the more coins you get, and this progressive feature elevates the game beyond a simple, old-school slot.

The max win is actually very low at only 165x, but you can play with very small bets starting from 0.03 SC – maybe a good one for the more cautious gamers. And remember, the RTP is still really high at 97.16%, so to ride the Gold Train, head over to PlayFame sweepstakes casino!

Next we’re taking a trip to China to play Caishen’s Gold, another relaxing slot with lovely music and colorful visuals.

The various symbols create standard paylines in the base game, and the laughing Caishen himself often makes an appearance as the wild. You’ll notice four jackpots available along the top of the screen too, and these come into play during the bonus round. That’s triggered by landing three scatters and shows you a grid of coins which you click on one by one to flip over. If you manage to reveal three of the same symbol, you claim that jackpot – a nice change of pace from the reels.

An RTP of 97.08% is a good reason to choose this slot, and McLuck is a great place to play it, alongside the other titles from the Caishen series.

This list wouldn’t feel complete without an entry from Big Bass, one of the most popular slots series of recent years. Big Bass Splash is an upgrade of Big Bass Bonanza, which also has a similarly high RTP, but we recommend Splash because of its higher max win at 5,000x.

The base game is all about lining up symbols on standard paylines, but you really want to land 3 scatters to reach the bonus feature. Here you get a wild symbol, the fisherman added into the mix, and he collects values from fish symbols and multiplies them into wins for you. He also lights up one of the progressive icons in the meter at the top, and this is the key to winning more free spins and building up massive prizes.

This is a very highly volatile game with long dry spells, then suddenly you’ll land a huge win. If that sounds like the rhythm for you, we recommend playing at Mega Bonanza.

The full title for this slot is Floating Dragon New Year Festival Ultra Megaways Hold & Spin! It’s a reskin of Floating Dragon Megaways, and has the potential for a high RTP of 96.70%; that figure is variable depending on the casino, but if you play at Stake.us you’ll get the highest RTP version.

There’s a lot going on here, including a funky-shaped grid and tumbling reels, so it’ll likely suit experienced players best. To summarise, there is:

• A Megaways base game with an ante bet feature.
• A Free Spins round (pictured) that has a similar feel to Big Bass Splash (the fisherman is replaced with a lady symbol).
• A Hold & Win feature where the aim is to land coins with various values and multipliers.

The mechanics and Chinese-themed visuals are complex and busy, but the music is relaxing, and you can win a massive 20,000x your bet on this slot!

There are many Aztec-themed slots but you’ll be hard pressed to find one with a higher RTP than Aztec Bonanza. It’s another title with variable RTP, but if you play it at Stake.us you’ll get 96.50%.

The key to this game lies in the grid’s cross shape and the four blockers in each corner. Once you stack up paylines via the tumble feature, you start to break away the blockers, unveiling a bigger grid and special symbols. It’s quite cool once a nice chain reaction begins, and once you’ve broken away all four corners you reach the free spins round.

There’s a big 19,000x max win available, but you can’t buy the bonus here, so be prepared to do a bit of grinding.

Rounding out our list, we have the 8th game from Pragmatic, who are known for being a high RTP provider. And as well as a great RTP, Peking Luck provides the chance for a simply astonishing max win of 180,000x, beating everything else on our list by a mile.

Forgiving the Peking duck pun in the title, the Chinese theme is done tastefully and goes beyond a basic aesthetic by referencing the Peking opera. It’s possibly the best-looking slot on our list and a delight to play.

The base game is simple on a 5 x 3 grid, but once you get 3 scatter symbols and unlock the bonus feature, you get to choose your amount of free spins and multiplier at random (doing well here is the key to that max win). It’s easy to understand, but highly volatile, so it will take time to reach that bonus. We recommend playing this at Pulsz.