Among the thousands of video slots available in online casinos, there's a specific category that stands out for their popularity and entertainment value: the ones that come with bonus rounds.
These rounds transport you to a different screen where -- depending on the slot-- you may have to make some decisions, match patterns, solve puzzles, or just relax watching a mini game unfolding with a predetermined outcome. One thing is certain: if it's coupled with good graphics and sound effects, it will definitely engage you more than regular spins. And if these spare rounds are accompanied by free spins ... well, that's simply the best of all worlds!
In this guide we have gathered some of the best free casino slots with bonus rounds so you can try them out at some of our (some of which offer no deposit bonuses including free spings). We also provide links to demo versions hosted right here at Indivisible Gaming so you can enjoy them without having to spend a single credit.
If you are into ancient civilizations, you might like Tumbling Reels, one of the most popular bonus round features ever. Find out where to find the top slots with this rewarding mechanism, how they work and what demo versions are available online.
Best Free Casino Slots with Bonus Rounds
Stairway to Heaven
- Where to play:
- The best version:
- 243 ways to win
- 95% RTP
- Progressive jackpot
This NetEnt creation was taken down from casinos in 2017, but lucky us there are still some casinos that hold it dearly and have kept it up and running. This is a heavenly slot with superb graphics and mesmerizing sounds - not to mention a staircase of devils and a beautiful lady rewarding you with a progressive jackpot if you manage to unlock them all. We're talking about a true gem here, so don't wait and try Stairway to Heaven while you still can!
Where to play Stairway to Heaven
Unfortunately Stairway to Heaven cannot be played for free anywhere. The only place where you can experience this masterpiece is one of the casinos listed above. If you feel lucky you can try it right away with as little as $€1.
Lights
- Where to play:
- The best version:
- 243 ways to win
- 96.96% RTP
- Free Spins with multiplier
Lights is another beautifully crafted NetEnt slot that takes inspiration from Asian culture. It has stunning graphics and an excellent soundtrack. The Yin & Yang symbols activate a bonus round where you will have to match 3 identical characters to win coins. It can be played for real money from $€0.25 and it is available for free at .
Where to play Lights
96.88% RTP
$1000 + 200 Free Spins
Fruit Case
- Where to play:
- The best version:
- 25 lines
- 96.30% RTP
- Avalanche Multipliers
Fruit usually means boring fruit symbols and there's nothing I hate more than biting into an awkward virtual cherry after each spin. But this slot makes ammends for all the sins of its kind. The fruits here explodes when part of a winning combo, allowing you to enjoy a series of 'Avalanches' (aka respins) that can greatly increase your win thanks to multipliers that go up by 1 with each new Avalanche. What's more: it's super fun and addictive thanks to the splashing animations that make you feel like you're actually crushing fruits wrapped in netted bubble to pop them... All nicely inspired by the popular mobile game. Try it out at Duelz casino along with other awesome NetEnt slots and claim up to $1000 Welcome Package + 500 Free Spins!
Where to play Fruit Case
96.30% RTP
$1000 + 500 Free Spins
Secrets of Atlantis
- Where to play:
- The best version:
- 40 lines
- 97.07% RTP
- Nemo and Mermaid Bonus - Triggered by 3 Pearl symbols plus Nemo and Mermaid respectively. You'll be transferred to a coral screen where 15 free spins will be awarded, and every time a Wild Nudge will attempt to fill the whole reel. Very easy on the eyes and fun to play!
Who doesn't like the idea of unveiling the secrets of the lost city of Atlantis? Even better if we are talking about a high quality product like this slot created by NetEnt. The two special symbols (Merman and Mermaid) are key to trigger the best paying symbol and the most interesting bonus round. Secrets of Atlantis is available at with a first deposit bonus of up to $500 + 100 free spins.
Where to play Secrets of Atlantis
97.07% RTP
$500 + 100 free spins
Tower Tavern
- Where to play:
- The best version:
- 243 ways to win
- 96.33% RTP
- Pick and Win Bonus - Triggered by 3 or more Tower symbols. You will be prompted to pick one of the towers and reveal coin prizes until you reveal 'Collect'. Max exposure applies.
Tower Tavern is a funny slot where every time a tower (castle) symbol lands, it will either remain sticking to the reel and Award Free Spins, or it will expand covering the entire reel and Award a Picking Bonus. The artwork is nice and original, the music entertaining. There are 243 ways to win and the betting range is very flexible going from $0.25 to $125 per spin. Ready to explore the Tower Tavern? Wait no longer and get $25 exclusive at !
Where to play Tower Tavern
96.33% RTP
$25 exclusive
Dragon Maiden
- Where to play:
- The best version:
- 40 lines
- 96.46% RTP
- Free Spins with multiplier and moving wild - Triggered by 3 or more Scatter symbols. You will be prompted to pick one of the Dragons and receive a bonus of free spins and a multiplier. During free spins a Wild Dragon icon moves across the reel set according to this trail. Max exposure applies to free spins and trail.
Dragon Maiden is another great creation by Quickspin, available at . It is a well balanced slot with medium variance featuring expanding wilds, a nice free spins bonus with trailing wild, and a cool gamble feature that allows you to choose between increasing the payout or guaranteeing it (with a maximum limit). At you can enjoy this slot on a first deposit bonus of up to $100 + 50 Free Spins!
hollywood casinos west virginiaWhere to play Dragon Maiden
96.46% RTP
$1000 + 500 free spins
Second Strike
- Where to play:
- The best version:
- 20 lines
- 96.32% RTP
- Second Strike Bonus - Triggered by any winning combination. Symbols of the winning combiniation will stay in place and you will get re-spins (up to 5) while remaining symbols sink one row toward the top of the screen. Each time a symbol participates in a new winning combination during Second Strikes, the counter is reset and you can climb all the way up to amazing heights! Check out this video preview:
Second Strike is a fun slot where wins can pile up quickly especially if you manage to reach the top rows. With a bit of luck you can score 5x on top of the 5 already paid for the bottom line. Definitely a slot that pays better the more you bet (up to $100). Ready to give it a shot? , a Curacao licensed casino, offers the largest Second Strike's bet you will find online.
Where to play Second Strike
Poker Login, Down 80% Since 2013 - PokerListings96.32% RTP
$10000 + 5 Second Strike Jackpot
Big Bad Wolf
- Where to play:
- The best version:
- 25 lines
- 97.34% RTP
- Blow Down the House Bonus - Triggered by 3 or more Moon Scatters, or alternatively by 5 Pigs on a active payline. You will be prompted to click on the house and watch the pigs eating the cottage onciliating the rest of the reels turning into Wilds. Then you will be awarded 10 free spins where the Blow Down feature is active: with each win the moon icon will increase a wooden wagon that, once filled, transforms all wolf symbols in Wilds.
I love this fairytale-themed slot based on the Three Little Pigs story. The animation are really funny, the audio is spot on and the bonuses are pretty decent too. In fact Big Bad Wolf is one of the slots that pays the best among those listed in this page, considering that during the free spins - with some luck and a bit of persistence - you can easily fill the wagon with wolves turning almost the entire reel set in Wilds. Try it now at with a welcome pack including up to $100 and 50 Free Spins!
Where to play Big Bad Wolf
97.34% RTP
$100 + 50 free spins
Demo game: Big Bad Wolf
Gold Lab
- Where to play:
- The best version:
- 40 lines
- 97.34% RTP
- Free Spins with streaming wilds and Incubator Bonus - Triggered by 3 or more Scatter symbols. You will be prompted to pick an incubator and receive a bonus of free spins and a multiplier. During free spins, a random symbol will convert into Streaming Wild for the duration of the free spins. Max exposure applies to free spins.
If you like well paid bonuses you will enjoy this Barbarian themed slot where 3 or more beaker symbols trigger a picking game awarding both free spins and a multiplier, and almost guarantee a nice boost to your balance (see screenshot below). Add to this the Tumbling Reels (a la Avalanch/NetEnt), the high quality graphics and animations, and you got yourself a candidate for the title of "best slot machine"! Available at with a Welcome Offer including up to $100 and 50 free Spins!
Gold Lab is also very popular among live streams players who enjoy showing the potential of this slot (it can get really hot!) thanks to its highly volatile game mechanic and 98% of the times it triggers (see video below).
Where to play Gold Lab
97.34% RTP
$100 + 50 Free Spins
Tumbling Tumbleweed
- Where to play:
- The best version:
- 243 ways to win
- 96.28% RTP
- Free Spins with Wild Reels - Triggered by 3 or more Scattered Windmill symbols. You will be prompted to pick a horse shoe and receive a bonus of free spins and a multiplier. During free spins, some or all of the reels may turn Wild thanks to the tumbling tumbleweeds. Max exposure applies to free spins.
Here's another member of the Tumbling family (together with Aztec Idols and Gold Lab) that uses the cascading reels feature to generate wins, and an additional characteristic -- the covered wagons that, during the free spins, can turn 1 or all reels Wild. It's a low variance slot that pays fairly often and rather decently. Try the demo version at HighWayCasino (click the 'info' button next to list) and claim up to $500 + 500 Free Spins at the same casino!
Where to play Tumbling Tumbleweed
96.28% RTP
$500 + 500 Free Spins
Vampire Senpai
- Where to play:
- The best version:
- 40 lines
- 96.18% RTP
- Oji-San Bonus - Triggered by 3 or more Scattered Oji-San symbols. You will be transferred to a screen with 3 rice bowls from which you must pick one to receive a coin reward equal to a prize from the paytable multiplied by the total bet. [...] Then, a Wild vampire girl will appear and start to chase the other characters making them turn into Wild too.
Vampire Senpai is a Japanese themed slot that tells the story of a group of students turned into vampires by their teacher (ojisan = old man). When you get 3 or more Scatters, you will access a picking game where you can win coins and -- afterwards -- a Wild Oji San will run after the other symbols turning them all into Wild. Not a very generous bonus, but quite fun nonetheless. Vampire Senpai is available at with a first deposit bonus of up to $500 + 100 Free Spins!
Where to play Vampire Senpai
96.18% RTP
$500 + 100 free spins
Book of Dead
- Where to play:
- The best version:
- 10 lines
- 96.21% RTP
- Free Spins with Expanding Symbol - Triggered by 3 or more Scattered Books, which also acts as wild. Prior to each free spin, Pyramid of Fortune will show a mystery symbol for one symbol from the paytable. During Free Spins this mysterious symbol has a higher chance to appear and, in bump features, it may occupy several positions horizontally and/or vertically.
Book of Dead is an homage to the Book of Ra, one of the most famous ancient egypt themed slots ever created. It has become incredibly popular since many online casinos due to its nostalgic appeal, and for good reasons: it's a solid performer that pays regularly and features a Gamble Game, Expanding Symbols Free Spins, and a very persistent Bump Feature (available during the base game)
Where to play Book of Dead
96.21% RTP
Elvis Frog in Vegas
- Where to play:
- The best version:
- 243 ways to win
- 96.10% RTP
- Free Spins with Guitar Collector Bonus - Triggered by 3 or more Scattered Guitars. Prior to the Free Spins a guitar collector bonus is activated: each character can hide a different free spins amount (between 1 and 15) and 1 re-spin is awarded. During free spins, an Elvis impersonator collects the chosen bonus and turns into an expansive Elvis symbol for the rest of the Free Spins. Max exposure applies to free spins.
Elvis Frog in Vegas is arguably the best slot released in 2020, or at least the most entertaining. It's got it all: a plethora of extra games triggered by 3 Scatters or by compatible combinations involving the Elvis Impersonators; a very fair pay table rewarding small and mid combinations; a highly volatile Guitar Collector Bonus; a superb gamble game based on jackpots instead of suit/color; and an amazing soundtrack / animation during the free spins. Try it NOW at with a welcome package including up to $500 and 300 free spins
Elvis Frog in Vegas is so popular among livestreamers that it's nearly impossible to find a demo version of the best online. However, if you are willing to play with real money you will be rewarded beyond your expectations, since this slot pays extremely well thanks to the Elvis Impersonators that seem to appear everywhere!
Sites That Offer a Free No Deposit Bonus for Poker in 2023Where to play Elvis Frog in Vegas
96.10% RTP
$500 + 300 free spins
Have you enjoyed these free online casino slots with bonus rounds? There's more where that came from! On the dedicated page you will find many other demos, from the classic Book of Ra to more recent releases such as , Sabaton, and more.
Tumbling Reels Slots
Tumbling Reels, also known as Rolling Reels, Cascading Reels or Avalanch reels, are a mechanism according to which winning combinations explode and make room for new symbols to fall from above (just like in classic arcade games).
This feature adds action to the game and increases the chances to form new winning combinations without having to wait for new spins. Usually Tumbling Reels do not cost anything (unlike extra bets that require to enable them), but sometimes they may come attached to other characteristics such as Multipliers that apply to the winner combo and to the winnings derived from the subsequent Tumbles. Below you will find a selection of the best slots with Tumbling Reels and Multipliers, along with their demo versions.
Gonzo's Quest
- Tumbling Replace with Multiplier - When a winning combination is part of a winning spin, it will explode and make room for new stones to fall from above (Tumbling Replaces). Moreover, an Multiplier is applied to the winnning combo and it increases by 1 for every consecutive win.
Gonzo's Quest is probably the most famous slot with Tumbling Reels (patented under the name 'Avalanche'). It is based on the adventures of a young Spanish conqueror aiming at discovering the City of Gold. The gameplay is engaging and the animations are nice, even though the variance is quite low and the max exposure limited (up to X56). You can play Gonzo's Quest at with a welcome pack including up to $100 and 50 Free Spins!
Demo game: Gonzo's Quest
Reactoonz 2
- Tumbling Replace with Multiplier - When a winning combination is part of a winning spin, the Toons will celebrate blowing bubbles that will make the symbols explode and new aliens to enter from above (Reactoons). Moreover, an XWAYMultiplier is applied to the winning combo and it increases by 1 for every subsequent reaction
Reactoonz 2 is a sequel of the hit Reactoonz, keeping all the ingredients of success from the previous edition and improving almost every aspect: from the number of ways to win (15,840 vs 21,600), to the presence of individual quests that allow you to trigger special features linked to the single player account on Playtech's Origins database. The maxim exposure seems capped at X5000 (instead of X99999) and the variety of bonuses is truly amazing, starting from the three Launchers located at the bottom that randomly trigger a pick and win, free spins or quantum tasks. Highly recommended!
Demo game: Reactoonz 2
Divine Fortune
- Tumbling Replace with Multiplier - When a winning combination is part of a winning spin, the symbols blend and new gods can descend from the sky (Tumbling Replaces). Moreover, an Multiplier is applied to the winning combo and it increases by 1 for every subsequent avalanche
Divine Fortunes is a famous mytology-themed slot with 5 reels, 3 rows, and 20 paylines. It is characterized by a Medusa'sanimate wild feature, by 3 interactive bonus features (free spins, jackpot bonus, and falling wilds) which require a minimum bet of $0.20, and by the possibility to win 1 of 3 progressive jackpots (Minime, Major or Mega). The maximum exposure is instead limited to X60 (without the jackpots). Good slot however somewhat dull compared to more modern products.
Demo game: Divine Fortune
Pixies of the Forest NexGen
- Tumbling Replace with Multiplier - When a winning combination is part of a winning spin, the pixies dance and make space for new plants to sprout from the ground (Tumbling Replaces). Moreover, an Multiplier is applied to the winning combo and it increases by 1 for every subsequent avalanche
Pixies of the Forest NexGen is the sequel of one of the most popular Native Americas slots by IGT. Compared to the original, this new version by has better graphics, an improved soundtrack, an extra wild reel on reel 3, and a breathtaking free spins bonus triggered by 3 or more Birch Tree bonuses. In fact, during free spins not only the win multiplier increases of 3x for every tumbling wins (X9 for X7, X15 for X12, etc), but also the 5 wild symbols on reel 3 become expanding wild for the duration of the free spins!
Demo game: Pixies of the Forest NexGen
Gold Factory NexGen
- Tumbling Replace with Multiplier - When a winning combination is part of a winning spin, the gears of the machine turn and gold coins rain from the skies (Tumbling Replaces). Moreover, an Multiplier is applied to the winning combo and it increases by 1 for every subsequent avalanche
Gold Factory NexGen is a Steampunk themed slot where the bonus based on the picking game awards both coins and free spins (maximum 20), and -- most importantly -- a multiplier factor that starts from 10x and goes up to X200 during the free games thanks to the Tumbling Reels. The maximum exposure is instead limited to X120,000 (without the bonus multiplier). Available at with a welcome offer including up to $500 + 300 free spins!
Demo game: Gold Factory NexGen
Tome of Madness
- Tumbling Replace with Multiplier - When a winning combination is part of a winning spin, the mummified pages of the grimoire crumble into dust and give space to new spells to write themselves (Tumbling Replaces). Moreover, an Multiplier is applied to the winning combo and it increases by 1 for every subsequent avalanche
Tome of Madness is a horror themed slot heavily inspired by Play’n GO’s hit Book of Dead. Similarly to the Egyptian classic, Tome of Madness features the same mechanism for the ordinary symbols and the Wild/Scatter in one, and the same Free Spins bonus awarded by 3 or more Scatters (here the Eye of Chaos). During the free game, a different symbol is picked randomly and acts as expanding paysymbol (similar to the role of the Scroll in Book of Dead). Unfortunately, the Max Exposure is limited to X5000.
Demo game: Tome of Madness
TED NexGen
- Tumbling Replace with Multiplier - When a winning combination is part of a winning spin, the Ted bears playfully jump and make room to new guests (Tumbling Replaces). Moreover, an Multiplier is applied to the winning combo and it increases by 1 for every subsequent avalanche
Ted is a Blueprint Gaming's hit slot made available also to Quickspin. It tells the story of a bear named Ted who loves beer and girls (and reward generously players that trigger his bonuses). In fact, Ted features not one but 2 wheel of fortune awarding respectively free spins and multipliers, a 5-reel carousel of symbols collected during the game (Senior Bonus), and an 'Overflowing Wild' bonus triggered by 3 or more Beer Bottle Scatters. During this bonus, Ted falls asleep and his belly opens revealing a wild that expands upwards for a number of Tumbles (Avalanches) ranging from 2 to 12
Demo game: TED NexGen
Voodoo Gold
- Tumbling Replace with Multiplier - When a winning combination is part of a winning spin, a voodoo doll melts and new juju powers take shape (Tumbling Replaces). Moreover, an Multiplier is applied to the winning combo and it increases by 1 for every subsequent avalanche
Voodoo Gold is a Quickspin's hit slot with medium volatility and impressive graphics. It has a classic setup with 5 reels, 3 rows and 25 paylines, and a lot of extra games including a wheel of fortune awarding free spins and coin prizes, a Zombie infectious bonus transforming symbols into wilds, and a Voodoo High Priestess Bonus triggered by 3 or more Scattered Idol Heads. Once activated, the Priestess will call upon the loa (voodoo gods) to blow away the leaves and reveal a 3x3 mega symbol which will remain stuck for a number of Tumbles (Avalancces) ranging from 2 to 12
Demo game: Voodoo Gold
Ark of Mystery
- Tumbling Replace with Multiplier - When a winning combination is part of a winning spin, the statues move and new symbols emerge from the jungle (Tumbling Replaces). Moreover, an Multiplier is applied to the winning combo and it increases by 1 for every subsequent avalanche
Ark of Mystery is a rich jungle themed slot by Quickspin with 5 reels, 4 rows and 243 paylines (up to 7,776 ways to win). It features expanding reelsmechanism controlled by two creatures: a European tourist and a local guy. The first expands the left side reel to maximize his wins, whereas the second extends the rightmost reel to prevent negative values
If both characters meet, the Ark of Mystery is triggered and it awards a sticky Wild that remains fixed for a number of Tumbles (Avalancces) ranging from 3 to 7. Note that the expanding reels can lead to the maximum exposure of XQuadriginta (ie. X4096). Demo game: Ark of Mystery
Sakura Fortune
- Tumbling Replace with Multiplier - When a winning combination is part of a winning spin, the geishas disappear and new cherry blossoms bloom (Tumbling Replaces). Moreover, an Multiplier is applied to the winning combo and it increases by 1 for every subsequent avalanche
Sakura Fortune is a slot inspired by the japanese saga 'The Last Samurai', telling the story of a young geisha trying to defend her people's honor against the western invaders. Sakura Fortune features expanding fortunes (reel 2,3,4) and walking fortunes (reel 1,5), as well as a Hi-Hi-Me bonus triggered by 3 or more Scattered Sakura logos. During this bonus, 3 more re-spins are granted and extra Sakura logos are pushed one position to the left whilst the Walking Fortunes remain stuck. When a re-spin occurs and a Walking Fortune meets he leftmost Walking Fortune, both fortunes expand and become stuck until the end of the bonus granting X5 multiplier to the initial winning combo
Demo game: Sakura Fortune
Attention: Some of the screenshots and demo links above refer to older versions of these slots developed by a different software provider (usually NexGen). These demo games are very similar to the original yet they could miss some of the latest graphics improvements and/or audio settings.
Where to play Free Casino Slots Online with Bonus Games
Now that you know the best free slots casino games with bonus rounds and tumbling (avalanche) reels, the question is: where to play them for real money? The answer depends on several factors, such as: your country of residence, the accepted payment methods, the preferred bonus types, the supported mobile devices, the average RTP and volatility of the slots, and so on.
For example, if you love playing Book of Ra you can choose Casumo Casino which offers one of the best welcome packages on the market (100% up to €300 + 30 free spins) and supports fast withdrawals (few hours approximately). Instead, if you prefer playing Reactoonz 2 Playzee Casino would be a good choice thanks to its original rewards system based on completion of various missions.
top us casinosTo help you finding the best match among the casinos offering free online slots with bonus rounds and Tumbling Reels, we have listed below the top operators sorted by countries. Alternatively, if you want to cast a wider net, you can compare all partners at once using the menu on the right.
All these brands are legit because they hold a license from a reputable authority (UKGC / MGA / CFC / ONJ...) and are constantly audited to verify they maintain the highest standards of security and fairness. To learn more about each casino read the related review where you can find detailed info about the gaming platform, the customer support, the payment methods, the bonus conditions, and – why not – the free slots with bonus games available in the live catalog.
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