Return to Player (RTP) is a crucial metric for anyone interested in maximising their winnings in online sweepstakes slots. The higher the RTP, the more likely you are to see returns on your wagers over time. In this comprehensive article, we will delve into the top eight highest RTP sweepstakes slots you can play. These high RTP games include offerings from industry giants like NetEnt, Relax Gaming, Barcrest, Pragmatic Play, Playtech, and Yggdrasil Gaming.

Book of 99 

Developed by Relax Gaming, the Book of 99 slot game boasts an impressive RTP of 99%. This ancient Greece-themed slot features 5 reels, 10 paylines, and a free spins bonus round. The high RTP makes it a fan favourite among players, offering excellent winning opportunities with an engaging gameplay experience.

Mega Joker

Mega Joker is a classic fruit-themed slot game by NetEnt, one of the industry’s leading developers. With its 99% RTP, this game offers a superb chance for players to win big. Mega Joker features a progressive jackpot, 3 reels, and 5 paylines. The game’s two-tiered structure includes a base game and a supermeter mode, giving players the opportunity to increase their winnings significantly.

Jackpot 6000

Another high RTP slot game from NetEnt is Jackpot 6000. This classic slot game boasts a 98.9% RTP and offers players an engaging gaming experience. Jackpot 6000 features 3 reels, 5 paylines, and a gamble feature, allowing players to double their winnings by correctly predicting the outcome of a coin flip.

Rainbow Riches

Rainbow Riches is an Irish-themed slot game developed by Barcrest, offering an impressive 98% RTP. This 5-reel, 20-payline slot features various bonus rounds, including the Road to Riches, Wishing Well, and Pots of Gold, each providing players with unique opportunities to increase their winnings.

The Catfather

The Catfather, developed by Pragmatic Play, is a unique and entertaining slot game with a 98.1% RTP. This 5-reel, 9-payline game is based on a feline mafia theme and offers various features, including wild multipliers, free spins, and a random stacked wilds feature that can boost players’ winnings significantly.

Ugga Bugga by Playtech

Ugga Bugga is a tribal-themed slot game by Playtech with an impressive 99.07% RTP. The game features a unique 3×10 reel structure, offering players 10 paylines to win on. Ugga Bugga’s hold feature allows players to hold one or more reels in place, increasing their chances of landing winning combinations.


Jokerizer is an engaging and visually appealing slot game developed by Yggdrasil Gaming, offering a 98% RTP. This 5-reel, 10-payline game features a Jokerizer mode that increases players’ winning chances by adding extra joker symbols to the reels. The game also includes a mystery win feature that can award players up to 6,000 coins.

Marching Legions

Marching Legions, another high RTP offering from Relax Gaming, features a 98.12% RTP. This Roman-themed slot game has 5 reels and 243 ways to win. Players can enjoy engaging gameplay, including features such as respins, free spins, and nudging wilds. The Marching Respins feature, in particular, can lead to impressive winnings by stacking legionnaire symbols on the reels.

Blood Suckers

Blood Suckers is a popular vampire-themed slot game developed by NetEnt, offering an attractive RTP of 98%. This 5-reel, 25-payline game features immersive gameplay with wild substitutions, scatter wins, and a vampire-slaying bonus game. The bonus game, in which players hunt vampires in an ancient burial chamber, adds an extra layer of excitement and winning opportunities to this high RTP slot.


When it comes to maximizing your winnings in online sweepstakes slots, the RTP is a critical factor to consider. The games listed above represent some of the highest RTP slots available, giving players a better chance of seeing returns on their wagers.

With offerings from leading developers like NetEnt, Relax Gaming, Barcrest, Pragmatic Play, Playtech, and Yggdrasil Gaming, you can enjoy a diverse range of themes and gameplay features while maximizing your winning potential. So, give these high RTP sweepstakes slots a try and increase your chances of walking away with impressive winnings.



What is RTP in slot games?

RTP stands for Return to Player, a percentage that indicates the expected long-term return on wagers made by players in a slot game. Higher RTPs suggest a better chance of winning over time.

How does a high RTP benefit players?

A high RTP benefits players by offering a greater likelihood of receiving returns on their wagers. While it doesn’t guarantee wins, it does increase the odds of winning over an extended period.

Are high RTP slots always the best choice?

While high RTP slots tend to be more profitable in the long run, players should also consider factors like game volatility, bonus features, and personal preferences when choosing a slot game.

How can I find the RTP of a slot game?

The RTP of a slot game is usually mentioned in the game’s information, rules, or paytable. Alternatively, you can search online for the RTP of specific games or consult reviews and casino listings.

Do all online casinos offer high RTP slots?

Most online casinos offer a variety of slot games with varying RTPs. It’s crucial to research and select a reputable online casino that provides high RTP slots to maximize your winning potential.