Upcoming Slots for September 2021

SlotsMate Editorial
By SlotsMate Editorial
Last updated on Sep 01, 2021
7 min

The month of September looks promising if you are a slot game enthusiast looking for an amazing gaming experience. Thanks to the ever-working casino software developers, video slot players will be spoiled for choice throughout the month.

Whether you are looking for simple online slots with a classic touch or the newest breed of Megaways slots, you’ll have plenty of options to choose from. We have made your search for the newest slots much easier by reviewing some of the best options for you.

All you have to do is check our list of upcoming slot games for September, identify the one you wish to play, and prepare to play once it’s released. Read on to find out more.


Bigger Bass Bonanza – Pragmatic Play/Reel Kingdom – September 16th 2021

Bigger Bass Bonanza Slot

The partnership between Pragmatic Play and Reel Kingdom has been a productive one because it has led to some of the best slot games you can find today. In 2020, Reel Kingdom released the famous Big Bass Bonanza slot game, which comes with fantastic features and is fun to play.

This September, online slot fans can expect a new version of the game known as Bigger Bass Bonanza. There will definitely be some similarities, but the newest release is expected to come with some additional features that the older version does not offer.

First of all, Bigger Bass Bonanza features an extra row and two additional paylines compared to the initial version of the game. There are 5 reels, 4 rows, and 12 paylines. As expected from a fishing-themed slot game, the reels feature symbols representing fishing equipment. Bigger Bass Bonanza offers an attractive return to player (RTP) payout of 96.71%.

The graphics look great and everything is expected to run smoothly on desktop and mobile gaming devices. Players will benefit from Money Collect symbols, Free Spins, Wild substitutions, as well as Multipliers. And the maximum amount you can win is 4,000x your bet.

Dwarven Gems Megaways – Iron Dog Studio – September 15th 2021

Dwarven Gems Megaways Slot

Megaways slots have become the norm these days as casino game providers seek to offer a more exciting gaming experience. Dwarven Gems Megaways from Iron Dog Studio is one of the upcoming Megaways slots every slot player should watch out for this September.

With a reasonable RTP of 96.7%, the mining-themed game takes you underground where the dwarves are busy looking for mystical gems and gold. You will need to use different types of tools such as Wilds, Scatters, Dwarven Bombs, and Power Gems to help the diligent team of dwarves harvest the best gems. 

Whenever you land a win, the winning symbols will be destroyed to create room for more symbols to occupy the empty spaces. The Wild symbol is designed to substitute for all non-special symbols while 4 Scatters will grant you from 6 to 11 Free Spins. To help you land more wins, the Dwarven Bomb acts as a Sticky Wild that can explode the nearby symbols.

The Power Gem will appear during Free Spins as a Wild to substitute for all regular symbols. It can reward you with Wilds or additional Free Spins. The Lucky Last Spin Feature is also worth noting as it gives you an extra spin if you win on the last free spin. 

Dead Man’s Trail – Relax Gaming – September 7th 2021

Dead Mans Trail Slot

If you are a fan of pirate-themed games, Dead Man’s Trial from Relax Gaming could be the game you’ve been waiting for. In this game, you will embark on a journey to the high seas accompanied by a team of pirates. Dead Man’s Trail offers a nice theoretical return to player rate of 96.29% and is played on a 5x4 layout with 40 ways to win.

The game is clearly designed for everyone because its bet amounts range from €0.10 to €20. Every time you spin the reels of the game, you stand a chance to win up to 50,000x your bet.

The Trail Bonus is the most interesting feature in this game. You will have to land 3 or more Bonus symbols on the reels or use the Buy Feature to activate it. Once you do, the player pawn will move 1-9 steps per turn and trigger an action depending on the selected tile. The Normal Tile will give you the visible prize while the Start Tile will trigger the Reset special action.

If the pawn lands on the End Tile, the game will end and any amount won will be awarded. Overall, there are 11 special actions during the Trail Bonus. You’ll also be excited to know that you can easily win some money if you trigger the Coin Feature by landing coin symbols on 3 or more reels. 

The Goonies Return – Blueprint Gaming – 30th September 2021

The Goonies Return Slot

The Goonies is a 1980s adventure film featuring a group of misfits looking for hidden treasures. As with other famous movies, The Goonies inspired Blueprint Gaming to develop a slot game with the same name as the movie. We are now looking forward to The Goonies Return slot, which comes with more interesting features than the original Goonies slot. The upcoming slot promises to offer you endless entertainment as you set on a journey to find treasures.

With 5 reels, 3 rows, 20 paylines, and an RTP of 96%, The Goonies Return slot will be playable on desktops, phones, and tablets from €0.10 to €100 per spin. Any spin during the base game can trigger One-Eyed Willy modifiers. Here, the player gets keys to unlock Truffle Shuffle Wilds, Lucky Coins, Hidden Riches, W-invention Reels, a Bonus Boost, or a Win Spin.

Also, the game features a wide selection of bonuses such as the Booby Trap Bonus, the Waterslide to Wealth Bonus, the Skeleton Organ Free Spins, the Fratelli Free Spins, and the Final Voyage Free Spins.

Mega Moolah the Witch's Moon – Aurum Signature Studios – September 30th 2021

Mega Moolah the Witchs Moon Slot

Mega Moolah has long been the go-to slot game for players looking to play slot games with progressive jackpots. Microgaming released the first Mega Moolah slot game in 2006, and the game has so far turned several winners into millionaires.

The popularity of the Mega Moolah brand has prompted other slot developers to copy the original slot game. Many slot players are now delighted to learn that a new version known as Mega Moolah the Witch's Moon is on the way.

Developed by Aurum Signature Studios, Mega Moolah the Witch's Moon is a progressive jackpot slot featuring the iconic Mini, Minor, Major, and Mega jackpots. The jackpot feature can be activated at any given moment during the base game. When it’s activated, the player spins the Bonus Wheel for a chance to win any of the 4 prizes.

The opportunity to win a Mega jackpot that starts at €1,000,000 is something to smile about even though the game has an RTP of 88.12%.


There you go! You should now be ready to give the above-mentioned online slots a try once they become available in September. The choice is yours to make depending on what you like in a slot game. Keep in mind that it’s always wise to play any casino game you’ve not played before in demo mode. That way, you can test the waters yourself and get an idea of what to expect if you decide to play for real money. Have fun!

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