Highest Paying Slot Machines and Profitability

In order to have the maximum chance of winning when playing slot games, besides understanding the basics of being a slot winner, you will also have to learn about some of the most crucial aspects. For a good start, most players utilize lists such as the top 10 best online slots to determine proven games with high return. But first, let’s clarify what the term Return to Player (RTP) means. RTP is the percentage of all wagered money that a slot machine is expected to pay back to players over time.

I.e., it's the proportion of cash returned to players as prizes. So, for example, if a slot game has an RTP of 94%, one can anticipate a return of $94 for every $100 bet. Just remember that RTP is a long-term statistic, i.e., any fluctuation (payoff highs and lows) will be averaged out.

So, the key to success is checking the RTP of the slot you’ve chosen to find out how profitable it is to play that particular title. But how does this work in practice? Here's a quick breakdown:

93% or lower: Low RTP – unattractive game.
93% to 95%: Poor RTP – playable, but don’t expect big wins.
95% to 97%: Good RTP – most games fall into this range.
97% to 98%: Super RTP – highly profitable.
Above 98%: Super RTP – the ultimate option, although rare!

The more the RTP is, the more favorable the odds are for you as a player and the higher the winning chances. The best paying slots always have a high RTP, so they are among the best online slots to gamble on.

The Top Online Slots for Payouts and Profitability

Following a comparison of the payout percentages of hundreds of slots, we have put together a list of the most rewarding ones you can play at an internet casino. Our list begins with the highest-performing game as far as RTP and payout potential are concerned.

Book of 99 (RTP: 99%)

Book of 99 is one of the highest "Book of" slots. In the first place, it boasts the highest ROI of all online slot machines at an incredible 99%. It features a bonus collection feature, stunning visuals, and a free spins feature with expanding symbols that are quite common. The maximum payout is 12,075x bet, and the volatility is high.

Mega Joker (RTP: up to 99%)

Mega Joker is classic fruit slot from NetEnt. It has 5 paylines, secret prizes, and classic fruit and bell symbols. It also boasts one of the highest return-to-player percentages in the world of slots online—99%. That top RTP is only activated when played in Super Mode, a higher-betting bonus game with much larger payouts than in the standard game.

Monopoly Big Event (RTP: 99%)

Monopoly Big Event is Barcrest's most lucrative slots, teeming with special features, excellent bonuses, and the highest RTP at 99%. Note: this RTP is only available in Big Bet mode, in which you wager the maximum stake on five Enhanced Spins. Sticky wilds, multipliers, extra wilds, and free spins make it among the best for high rollers.

Jackpot 6000 (RTP: up to 98.9%)

This old NetEnt slot ranks fourth. Its return-to-player rate reaches 98.9%—but its availability is only through Supermeter Mode, which is activated after a win in the base game. The highest win per spin is 6,000 coins and is gotten when spinning two or three jokers.

1429 Uncharted Seas (RTP: 98.6%)

Number five is this beautifully designed game from Thunderkick. This pretty weird Swedish developer is known for creating some of the most bizarre slots out there. 1429 Uncharted Seas is an underwater treasure hunt-themed one that features free spins with sticky wilds and solid pay potential. At 98.6% RTP, it's among the highest online slots.

Joker Strike (RTP: up to 98.11%)

Joker Strike is the legitimate sequel to popular Quickspin slot Second Strike. Additional features include a Wild Strike feature where you get to have a chance to receive a maximum of 10 extra wilds, and a High Roller feature with maximum RTPs of 98.11%. Such high RTP, along with thrilling gameplay, gives Joker Strike a instant appeal among high-rollers.

Blood Suckers (RTP: 98%)

Blood Suckers is the first of a number of NetEnt slots on our top list. It's one of the most popular slots with an RTP of 98%. With its sweet vampire-themed love story and 25 paylines, it remains one of NetEnt's top games. It has two types of bonuses: a free spins bonus and a pick-and-click bonus in which you smash coffins and slay vampires to win huge.

Kings of Chicago (RTP: 97.8%)

Kings of Chicago is an intriguing cross between NetEnt's slot and video poker games. Reels are populated by playing cards rather than slots' symbols. Big wins are derived from winning poker hands, with jokers doubling payouts. A free spins mode adds zest to this under-elevated 5-payline gem.