Top 10 Highest RTP Slots
If you’re looking for online slot machines with the highest RTP percentages, then you’ve come to the right place. We’ve compiled a list of the top ten below, but bear in mind that although these slots have the best payout rates in theory, RTP is calculated over masses of data. As such, any potential winnings you may make can be a long way off the average figure.
Book of 99 – 99%
Relax Gaming’s Book of 99 is a high volatility 5×3 slot with ten paylines. The reels are framed by an ancient Greek temple and are filled with mythological creatures, heroes, and heroines. Match two of these figures from left to right to start forming wins. Landing three or more of the book symbols will trigger the free spins bonus, in which one of the three symbols will become the expanding wild. To the side of the reels, you’ll notice a stack of books starting to form — collect 99 of them and this will also launch players into the free spins bonus round. At 99%, this slot has one of the highest RTP rates of any casino game.
Mega Joker – 98.9%
This high volatility slot, developed by NetEnt, offers players a slice of nostalgia by mimicking the layout of a mechanical machine and deploying the use of classic fruit symbols. There are just three reels and five paylines here and minimal bonus features available, but that doesn’t prevent Mega Joker from achieving an RTP just shy of 99%. The base game takes place on the lower set of reels; if you bet the maximum amount across all paylines and land a winning combo, you’ll have a decision to make. You can either cash in the amount, or migrate to the upper set of reels and play in the game’s supermeter mode. If you take the punt and win, payouts in the supermeter will be increased.
Jackpot 6000 – 98.9%
If you enjoy Mega Joker, then Jackpot 6000 is of a very similar style and design. NetEnt clearly understands how popular these classic slots are, particularly for players on a tight budget. Bets range from just 10p to £2 on this medium volatility slot, making it one of the most accessible slots in the world. Set in a brick-and-mortar casino, Jackpot 6000 again deploys the use of two sets of reels, one of which can only be played in the supermeter mode following a successful spin. The key difference here is that there’s a joker wild in play, which substitutes for other symbols.
1429 Uncharted Seas – 98.6%
Set sail in pre-Columbian waters in 1429 Uncharted Seas — a low volatility 5×3 slot developed by Thunderkick. This game has a unique aesthetic, with the reels drawn up on a map set at candlelight on a rickety old table. There’s an eeriness to the music, enhanced by the monstrous creatures illustrated on the reels. The compass acts as the game’s scatter and offers players the chance to claim free spins: three will issue ten spins, four will give you 20, and five will reward you with 50. There’s also a wild symbol represented by the sailing ship, which expands to fill the reels, revealing the Kraken that holds it in its tentacled grasp.
Marching Legions – 98.1%
Another slot from the Relax Gaming studio, Marching Legions is an eye-catching title unlike any other on this list. This 243-payline, high volatility slot has a soundtrack befitting of Gladiator, but characterises the Roman legions that give the game its name with Lego-like movements, creating a unique playing atmosphere. Marching Legions is packed full of bonus features; the most striking is the marching re-spins, launched when a full stack of soldiers fills the reels. It’s these soldiers that also trigger the free spins feature. When a stack marches outside the boundaries of the game, players will take one of the five steps needed on the helmet in the top right corner. Take all five steps and you can be rewarded with some extra spins.
Blood Suckers – 98%
If you enjoy Gothic themed slots, then look no further than Blood Suckers — the first in a series of hugely popular slots created by NetEnt. The 5×3 reels are filled with vampire symbols, including wooden stakes, bibles, bats, and of course, garlic. Landing three or more scatters will see players rewarded with ten extra spins, and during these spins, any wins will be tripled. Blood Suckers also features a creepy bonus game that takes place in the burial chamber. Emerging from the coffins in the chamber are nightmarish vampires — slay them, collect your coins, and get the hell out of there! Blood Suckers is a low volatility slot with 25 paylines.
Jokerizer – 98%
Jokerizer takes place against a whacky fairground, an aesthetic that chimes well with Yggdrasil’s brand of often crazy casino slots. This is a high volatility game with ten fixed paylines, and its five reels are filled with classic fruit symbols and lucky 7s. Jokerizer uses a win-both-way payline structure, with combos paying out from both left to right and right to left. Pay attention to the joker symbols that appear in the middle three reels: if three of these land, you’ll collect a mystery win, the highest of which is a payout of 6,000 coins.
Starmania – 97.9%
Starmania is a low volatility slot game with an ethereal quality, similar in style to NetEnt’s seminal title, Starburst. Created by Scientific Games, Starmania takes place against an intergalactic backdrop, with its reels filled by dazzling jewels and stars of various colours. But where this game distinguishes itself from Starburst is in its bonus features: landing two of the Bonus symbols pays out 20x the stake; four will give you 100x; and five will deliver a massive return of 200x. In addition to this, hitting three of these symbols will trigger ten free spins, supported by stacked wilds and the opportunity to reset the spins. With a perfectly pitched sci-fi soundtrack, this otherworldly slot has ten paylines.
White Rabbit Megaways – 97.8%
Back in 2016, Big Time Gaming created a new brand of online slots that were mechanised by a unique payline structure. These slots, known as Megaways titles, became hugely popular, and White Rabbit is a testament to that. Inspired by the zany world of Lewis Carroll’s Alice in Wonderland, this five-reel, high volatility slot has a maximum of 248,832 ways to win — a feature made possible by the Megaways structure. All of Alice’s famous companions are present on the reels, including the Mad Hatter, the Queen of Hearts, the Cheshire Cat, and the evil twins, Tweedledum and Tweedledee. Look out for the sleeping caterpillar, who improves the reels with wilds and multipliers, as well as the Down the Rabbit Hole free spins round, which can reward players with up to 75 bonus spins.
Zeus Lightning: Power Reels – 97.7%
Our final recommendation is Red Tiger Gaming’s Zeus Lightning — a high volatility slot with 30 paylines and seven reels. This game is all about the majesty of Zeus: when his stacked symbol appears, he’ll zap a symbol at random which will then fill the entire reel, generating increased payout wins. There’s also a free spins bonus up for grabs, triggered when three or more scatters land. When this happens, players have the choice to either accept eight extra spins, or to take a punt on the gambling wheel. If you choose the latter, you’ll end up with either four, twelve, or twenty spins.