Home » New Slots to Play in May 2021 | Week 3

New Slots to Play in May 2021 | Week 3

Hello and welcome to the latest GMBLRS peek at the week ahead, lifting the gems from the deluge of online slots invading casinos lobbies. So far this year, online slots mostly fit two categories: High or Extremely High Volatility, a trend driven more by casino demand than the average player maybe. Another concern for players is casino groups embracing sub-standard RTP slots. And just recently, occasional releases from single version providers, usually the right side of the track, have appeared on the wrong side of 96% – sneaky, sneaky.

Rather than name and shame, let’s go straight for the jugular and showcase releases with better hit rates and bigger designed return for your bet. Luckily, they’re some of the most desirable too.


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19th May 2021 | 4The Player – 3 Secret Cities

4The Player may have released their finest yet with 3 Secret Cities. Brilliant artwork takes you to three locations in Mesoamerica, each with its own background and rising win potential. What’s more, the gameplay is smooth too!

4theplayer 3 secret cities

3 Secret Cities is a 5×4 slot with 1,024 ways to win. Pays are awarded for two to five matching symbols landing from the left and you can explore from 0.10 to 20 credits per spin. This game has maximum volatility, with an RTP of 96.50% and wins of up to 50,000 times your bet. A feature buy increases the RTP to 98.00%.

What’s unique is the bigger bonus lies in location three at Gold City, but the BONUS↑UP mechanic means winning free spins at the other locations starts you back at the first. This clever twist may leave you wishing the game did not deliver free spins so you can reach a more potent bonus. Intelligently done for the players; the RTP stays the same for all features.

19th May 2021 | Thunderkick – Baron Bloodmore and the Crimson Castle

Stockholm based Thunderkick combine state-of-the-art graphics with clever features on the fun side of slots. Baron Bloodmore and the Crimson Castle is a highly volatile reel quest to defeat the lusting predators with wild substitutions, a Massive Mystery Symbol, a free spins round and a Crimson Cash bonus game offering wins of up to 25,000x your bet.

Thunderkick Baron Bloodmore

Baron Bloodmore and the Crimson Castle is a 5×3 video slot with 25 fixed pay lines. Wins are awarded for three to five matching symbols or in combination with a wild on a line from left to right only. You can enter the creepy castle on desktop, tablet or mobile from 0.10 o 100 credits per spin. The game has very high volatility and a single RTP setting of 96.07%.

19th May 2021 | Relax Gaming – Sails of Fortune

Slightly tamer in comparison to our previous two, Sails of Fortune from Relax Gaming takes you on a sea voyage with Mystery Map Respins and a Treasure Hunt Free Spins feature with expanding Mystery Maps for up to 7,776 ways that can lead to wins of up to 3,683 times your bet.

Relax Gaming Sails of Fortune screenshot

Sails of Fortune is a 5×3 video slot with 243 ways to win. During the bonus feature, the number can increase up to 7,776 ways. Pays are awarded for two to five matching symbols from left to right and you can join the mötley crew from 0.10 to 30 credits per spin. Another game with 5/5 volatility, a hit rate at roughly 1:4 spins and an RTP of 96.17%. Using the Buy Free Spins option will increase the value to 96.65%.

21st May 2021 | Big Time Gaming – King of Cats Megaways

Last but not least, King of Cats Megaways introduces PlayerSelect which allows reel hunters to choose their preferred predator, the lion or the puma, to act as the wild. Each awards multipliers for bigger wins and increasing multipliers in their own free spins mode that can lead to staggering wins of up to 56,620 times your bet.

BTG King of Cats megaways base game screenshot

King of Cats Megaways is a cascading video slot with six reels, each with two seven symbols, creating 64 to 117,649 ways to win. Pays are awarded for two to six matching symbols landing on adjacent reels from left to right Enjoy a refreshing medium to high volatility safari from 0.20 to 10 credits per spin (possibly up to 100 credits in some markets). The game has an RTP of 96.70% for ‘Lion’ mode and 96.72% for ‘Puma’ mode.


Watch out fans of Live Casino games – something big lurks in the jungle this week; Gonzo’s Treasure Hunt Live from Evolution Gaming is set to rock the live casino world with prize drops of up to 20,000 times your stake! You can watch a teaser video and check back for the imminent arrival of GMBLRS’ full review here.

Plus, see complete reviews of this week’s features and more at GMBLRS. Search under ‘slots released in next 7 days’ or ‘slots released in last 7 days’ using the handy search tool, for the latest titles.

Let’s Play!

Team GMBLRS

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