(ICYMI) The Top Casino Slot Games Released in 2021

(ICYMI) The Top Casino Slot Games Released in 2021
SNG-UK Main Blog BannerSNG-UK Main Blog Banner

2021 has been a very exciting year for online slot and casino game releases, with many indie companies joining forces with larger developers to create innovative and exciting slot machine and online casino games experiences across many themes. The new online slots and casino games for 2021 haven’t just experimented with theme, but with volatility and return to player (RTP) too, largely thanks to some pretty creative game systems.

For those new to casino games, or not already in the know, ‘RTP’ stands for ‘return to player’. Percentage return to player (% RTP) is the expected percentage of wagers that a specific game will return to the player in the long run.

For example, a common average RTP for slots, including slingo games is 96%. This means that for every £100 a player wagers on a slot machine, they will on-average receive £96 back. The 4% is known as the house-edge. 

So, why would a player want to play online slots in the UK where their odds put them at a loss? Well, it’s important to remember that while the RTP is a theoretical average, there is still a chance for a player to defy the odds and land big wins. Of course, the emphasis of playing casino games shouldn’t be on making money, but on having fun, but knowing the RTP of online casino games is useful to players who want to know the average payout potential of their chosen games. 

Here are the list of the top titles released this 2021 (in case you missed it):

Red Bar


Red Bar is a brand new slot machine created by Electrocoin and powered by Realistic Games. While a 2021 release, the Red Bar slot game takes its inspiration from classic fruit machines and features a 1x3 reel format that is presented in the form of a one-arm bandit slot machine. Like a classic casino game, the Red Bar slot includes features such as ‘nudges’, respins, ‘holds’, and also three jackpot values. Red Bar is a medium-volatility slot with a theoretical RTP of 96%.

Book of Vikings


The Book of Vikings slot machine is the creation of Pragmatic Play, and, as you might have guessed, is a Norse-inspired slot. With a 5x3 video slot format and 10 paylines, the Book of Vikings slot has high-value symbols, and includes a free spins bonus round, high volatility, and a theoretical return to player of 96.5%.

Fire Joker Freeze


Fire Joker Freeze has been created by Play n’ Go, and includes a battle between the Fire Joker and the Ice Joker across a 5x3 slot format. Both Jokers act as wild symbols and can stack to trigger bonus features such as a multiplier wheel. Fire Joker Freeze is played at medium volatility and has a theoretical RTP of 96.18%.

Diamond Mine Megaways JPK


Diamond Mine Megaways JPK is a much awaited follow up to the original Diamond Mine slot machine from Blueprint Gaming and incorporates both the Megaways and the Jackpot King (JPK) slot systems for some high-octane slot machine fun. Taking place in the heart of a Diamond Mine, Diamond Mine Megaways includes cascading wins, mystery symbols, and progressive prize pots. It features a medium-to-high volatility and RTP of 96.43%.

3 Clown Monty


3 Clown Monty is another Play n’ Go creation that follows clown circus owners Bumbo, Schmucky, and Whatda, with their new addition, the odd Gorilla clown ‘Bite-E’ who appears above the 5x3 reel set. The 3 Clown Monty slot includes multiple free spins bonus rounds and is played at high volatility with an RTP of 96.23%

Reggae Rhythm


If you’re looking to chill out Rasta-style then Eyecon’s Reggae Rhythm slot machine may be the game for you. This relaxed 5x3 slot machine features a bright and happy color scheme, 25 paylines, and bonus features such as free games, and a prize pick feature. This slot is played at high volatility and has an RTP of 95%.

Gator Gold  Gigablox


Developer Yggdrasil are known for their creative slot machine and their latest release, Gator Gold Gigablox features a savannah setting, with super-size ‘gigablox’ symbols which can reach a whopping 4x4 in size, which will take up most of the 4x6 game grid. The Gator Gold Gigablox slot machine is deemed high volatility with a theoretical return to player of 96%.



Hammerfall is created in combination with the Swedish rock band of the same name. Featuring some of the bands iconic tracks, plus bonuses like cascading reels, super tiles, the Song Feature, and Hammer High feature, it's no surprise that Hammerfall is a high volatility slot machine with an RTP of 96.2%.

ZZ Top - Roadside Riches


ZZ Top Roadside Riches is another slot from Play n’ Go which is inspired by the iconic band, ZZ Top. Including symbols such as the band members and with features such as free spins and walking wilds, the ZZ Top Roadside Riches slot is a high volatility thrill-ride which has an RTP of 96.2%.

Slingo Big Wheel


Slingo Big Wheel is a 2021 release from Slingo Originals. Combining a ‘Wheel of Fortune’ aesthetic with Slingo game play, Slingo Big Wheel features a maximum win multiplier of 2500x, plus access to increasingly lucrative prize wheels. This slot is high volatility and has a theoretical return to player of 95.1%.

Gonzo’s Treasure Hunt


Gonzo’s Treasure Hunt is one of the newest live game shows out there and is the creation of Evolution Gaming. Inspired by the iconic ‘Gonzo’s Quest’ series of slot games, this live game show features an exciting prize drop feature and can even be enjoyed in virtual reality. This game is medium volatility and has a theoretical RTP 96.56%.

Fruit Party 2


The Fruit Party 2 slot machine is the second installment in the Fruit Party slot series created by Pragmatic play. This fruity slot includes features such as tumbling reels, a random wild multiplier feature and free spins. The Fruit Party 2 slot is played at high volatility and has an RTP of 96.45%.

Play the Latest and Greatest Online Slots and Casino Games at Spin Genie

So if you’re a slots and casino game fan looking to experience the latest and greatest titles that 2021 has to offer, then look no further than Spin Genie as you’ll find all the titles listed above on our site. Discover over 1,500 of the not just the latest, but the classic and most popular online casino games around! 


888 Dragons Slot

Genie Picks: 888 Dragons

Discover Pragmatic Play’s 888 Dragons slot game at Spin Genie 18+ | Play Responsibly

A Dragons Story Slot

Genie Picks: A Dragon's Story

Experience a slot straight from a storybook with A Dragons Story from NextGen and Spin Genie 18+ | Play Responsibly

2024 Top 5 Leprechaun Slots

Genie and The Four Leaf Clover: 2024 Top 5 Leprechaun Slots

Discover the top 2024 Leprechaun Slots here at Spin Genie. 18+ | Play Responsibly

V: 1.50.0 All rights reserved. January 2020