Best Buy Bonus Slots to Play in 2025

Online slots with Buy Free Spins/Buy Feature are extremely popular nowadays. Especially in the demo version, where you can freely use thousands of virtual coins without any risk of losing real money. And because the Buy bonus feature is quite expensive with no guaranteed result free demo slots are a great way to test them and enjoy them properly. 

You are in the right place if you like the slots with the Buy Free Spins feature. We came up with a list of our best slots where you can buy bonus. You can check them up and if you like, there will be a link to the free game.

Our Pick of the Best Buy Bonus Slots in 2025

Wildies

Get ready for a delightful adventure in Wildies! This slot is packed with sugary treats like cakes, jellies, and coffee that can lead to big wins.

The Wild symbol is your golden ticket to extra spins. Land enough Wilds and you'll trigger the Wild Respin feature. If you're lucky enough to find three Scatter symbols, you'll unlock the Free Spins round, starting with six spins.

• Software: Pragmatic Play
• Buy free spins cost: 80x bet
• Max win: 7500x bet

Buy Bonus feature description

During the Free Spins round, players get 6 free spins with all Wild symbols staying on the screen and moving to a new position each spin. The round starts with one Wild symbol. Collecting every third scatter symbol adds another Wild symbol with increasing multipliers (x2, x3, x5, x10) and gives 3 more free spins. No more Wilds can be added after the fifth. If triggered with 4 or 5 scatters, the round starts with 2 or 3 Wilds and 3 or 6 scatters, but these initial scatters don’t grant extra spins.

Play Wildes slot in demo for free

Sugar Rush 1000

Get ready for an even sweeter adventure with Sugar Rush 1000! This game cranks up the sugary fun with a bigger 7x7 grid filled with jelly bears, hearts, and stars. To win, match five or more of the same symbols together. Once you do, those symbols disappear, and new ones drop down to create more winning chances.

Here's the sweet twist: Every time a winning symbol explodes, it leaves a mark. If another symbol explodes in the same spot, a multiplier kicks in, starting at x2 and going all the way up to a massive x1,024! This multiplier boosts your winnings.

• Software: Pragmatic Play
• Buy free spins cost: regular free spins 100x bet/super free spins 500x bet
• Max win: 25000x

Buy Bonus feature description

In Sugar Rush 1000, landing 3-7 SCATTER symbols awards 10-30 free spins. During the Free Spins, multipliers on marked spots stay and can increase with each tumble. Additional SCATTER symbols during this round can grant more free spins. You can also buy into the Free Spins: Standard Free Spins for 100x your bet or Super Free Spins for 500x your bet, where all spots start with x2 multipliers.

Play Sugar Rush 1000 slot in demo for free

Candy Blitz

This candy-themed game takes place on a 6x5 grid. To win, you need to match at least eight identical candies anywhere on the screen. Winning candies disappear, and new ones fall from above, creating a chance for more wins. A multiplier on the side of the screen can boost your winnings up to 500 times!

To activate the Free Spins bonus round, you'll need to land at least four Scatter symbols. Once in Free Spins, the multiplier starts at 2x and can increase with each win. Find four more Scatters during the bonus round for even more Free Spins!

• Software: Pragmatic Play
• Buy free spins cost: 100x bet
• Max win: 10000x bet

Buy Bonus feature description

4-6 Scatter symbols to trigger the Free Spins feature, awarding up to 14 spins with a guaranteed minimum multiplier of x2, up to x500. Additional Scatters during the feature can award more free spins and bigger wins.

Play Candy Blitz slot in demo for free

Candy Blitz Bombs

Get ready for a bigger and better candy adventure! Candy Blitz Bombs features a 6x5 grid filled with colourful candies. Match at least eight identical candies to win. Once you do, the winning candies disappear, and new ones drop down, creating the potential for more wins.

But that's not all! A multiplier reel on the side increases by 1 with every successful cascade, boosting your winnings. To make things even sweeter, special multiplier bombs can appear with values from 1x to 500x. If a cascade happens when a bomb is on the screen, its value is added to the multiplier reel.

• Software: Pragmatic Play
• Buy free spins cost: 100x bet
• Max win: 5000x bet

Buy Bonus feature description

The Free Spins feature awards 10, 12, or 14 spins. Multipliers on the reel increase by x1 with each tumble and don’t reset. Bomb symbols boost the multiplier reel value. Landing 3 or more Scatters retriggers the feature with 5 extra spins. Special reels enhance gameplay and win potential. The Bomb symbol can appear anywhere on the reels with a random multiplier value ranging from x3 to x500. This multiplier is added to the current reel multiplier, increasing win potential significantly.

Play Candy Blitz Bombs slot in demo for free

Big Bass Bonanza Reel Action

This underwater adventure takes place on a 5x3 grid filled with fishing lines and dragonflies. Match multiple symbols to win.

Look out for the Fish symbols, which are the key to unlocking the Free Spins bonus round. Once there, you can collect Money symbols, benefit from increasing multipliers, and even earn more Free Spins for bigger wins.

• Software: Pragmatic Play
• Buy free spins cost: 100x bet
• Max win: 21000x bet

Buy Bonus feature description

During Free Spins, Wild symbols collect values from Money symbols and are saved until the end. Every 4th collected Wild retriggers the feature, awarding 10 extra spins and increasing the Money symbol multiplier:

• First retrigger: 2x multiplier
• Second retrigger: 3x multiplier
• Third retrigger: 10x multiplier

After the third retrigger, no more retriggers are possible. Additionally, if only one Wild is left at the end of a spin, Fish Money symbols may appear randomly. Special reels are active during the feature.

Play Big Bass Bonanza Reel Action slot in demo for free

Buffalo King

Get ready for a thrilling adventure on the African savannah! Buffalo King is a slot game with 4 rows and 6 reels, offering 4096 ways to win. Powerful buffalo symbols can fill entire reels, leading to massive payouts. Trigger up to 100 Free Spins with opportunities to re-trigger for even more chances to win big. Wild symbols can also multiply your winnings up to 5 times!

• Software: Pragmatic Play
• Buy free spins cost: 75x bet
• Max win: 97350x bet

Buy Bonus feature description

To trigger the Free Spins feature, land 3 or more Bonus symbols:

• 6 Bonus symbols award 100 free spins
• 5 Bonus symbols award 25 free spins
• 4 Bonus symbols award 15 free spins
• 3 Bonus symbols award 8 free spins

Additional Bonus symbols during Free Spins can retrigger more spins:

• 6 Bonus symbols award 100 free spins
• 5 Bonus symbols award 25 free spins
• 4 Bonus symbols award 15 free spins
• 3 Bonus symbols award 8 free spins
• 2 Bonus symbols award 5 free spins

Wild symbols during Free Spins have random multipliers of 2x, 3x, or 5x, which multiply winnings that include Wilds, potentially leading to substantial payouts.

Play Buffalo King slot in demo for free

Starlight Princess

Join the enchanting Princess in her celestial kingdom! This magical slot features 20 paylines and a chance to win big with shiny multiplier symbols that can appear randomly, offering up to 500 times your bet. The Princess' magical wand is your key to unlocking the Free Spins bonus round. Collect multipliers during the Free Spins and watch your winnings soar as they're applied to your next win!

• Software: Pragmatic Play
• Buy free spins cost: 100x bet
• Max win: 5000x bet

Buy Bonus feature description

Landing 3 or more Scatter symbols awards 15 free spins. During Free Spins, Multiplier symbols increase a total multiplier pot with each win, boosting subsequent wins. If 3 or more Scatters appear again during Free Spins, you get an extra 5 free spins.

Play Starlight Princess slot in demo for free

Gates of Olympus

Step into the realm of the gods with the Gates of Olympus! This exciting slot features a 6x5 grid and pays when you land at least 8 matching symbols in a cluster. As symbols disappear, new ones fall from above, creating endless winning possibilities.

Zeus, the king of the gods, has bestowed four special multiplier symbols upon mortals, each with the potential to multiply your wins by up to 500 times. Enter Mount Olympus itself during the Free Spins round, where you'll enjoy 15 free games and watch as multipliers accumulate for truly epic rewards.

• Software: Pragmatic Play
• Buy free spins cost: 100x bet
• Max win: 5000x bet

Buy Bonus feature description

Trigger the Free Spins feature by landing 4 or more scatter symbols, awarding 15 free spins. During these spins, each multiplier symbol boosts your win and adds to a total multiplier for the round. Landing 3 or more scatters during the Free Spins adds 5 more free spins.

Play Gates of Olympus slot in demo for free

Champions of Rome

Prepare for battle in Champions of Rome! This exciting slot game transports you to the heart of ancient Rome. With 5 reels and 20 paylines, you'll encounter a variety of symbols, including high-paying, medium-paying, and low-paying icons.

Look out for the Wild symbol to help complete winning combinations. The Beast symbol and Free Spin symbol hold the key to unlocking thrilling bonus features. Get ready for intense action with the Gladiator Feature, Training Free Spins, and Deathmatch Free Spins. You can even skip the wait and buy your way into the Free Spins round if you're feeling lucky!

• Software: Yggdrasil
• Buy free spins cost: 1000 coins
• Max win: Not Mentioned

Buy Bonus feature description

In this game, landing 3 or more Free Spin symbols allows players to choose between two Free Spin modes. A random Gladiator symbol replaces high-pay symbols, using their weapon each spin to add 4 wilds. Instead of Free Spin symbols, a Beast symbol appears on reels 2, 3, and 4 during Free Spins. If a Gladiator lands a wild on a Beast symbol, players get 1 extra Free Spin. Free Spins use the same lines and coin value as the triggering spin.

Triggering Free Spins and Coin Awards:

• 3 Free Spin symbols: Free Spins + 20 coins
• 4 Free Spin symbols: Free Spins + 300 coins
• 5 Free Spin symbols: Free Spins + 12,000 coins

Free Spin Modes:

Training Free Spin Mode:

• 8 regular Free Spins
• Reels spin automatically until Free Spins are exhausted

Deathmatch Free Spin Mode:

Players can choose from 3 Deathmatch modes, each with a 450 coin win target. If the target is met, the win is multiplied and awarded. If not, all Free Spin wins and multipliers are forfeited, but a consolation prize is given. Activating spin coins and total win multipliers do not count towards the coin target.

Deathmatch Levels:

• Level 1: 7 Free Spins, x2 multiplier
• Level 2: 6 Free Spins, x3 multiplier
• Level 3: 5 Free Spins, x4 multiplier

Consolation Prizes (if 450 coins not won in Deathmatch):

• 40 - 200 coins
• 5 Training mode Free Spins with the same Gladiator as in the Deathmatch Free Spins.

Play Champions of Rome slot in demo for free

Wanted Dead or a Wild

Grab your six-shooter and prepare for a wild ride! Wanted Dead or a Wild is an action-packed Western slot that features a 5x5 grid and the chance to win up to 12,500 times your bet. Encounter ruthless outlaws, thrilling duels, and daring heists as you spin the reels.

• Software: Hacksaw Gaming
• Buy free spins cost: The Great Train Robbery: 80x bet, Duel at Dawn: 200x bet, Dead Man’s Hand: 400x bet
• Max win: 12500x bet

Buy Bonus feature description

There are three types of free spins you can get with the Buy Free Spins feature:

The Great Train Robbery Bonus Game:

• All Wild symbols become sticky, allowing for repeated wins.
• Filling the screen with sticky Wilds can result in a large payout.

Duel at Dawn Bonus Game:

• Increased chances of landing multiple VS symbols.
• Features up to five expanded DuelReels™ with dueling outlaws, offering the potential for significant wins.

Dead Man’s Hand Bonus Game:

• A two-phase feature focusing on collecting Wild symbols and multipliers.
• In the Showdown phase, collected Wilds are placed randomly on each spin, enhancing wins with the accumulated multiplier.

Play Dead or a Wild slot in demo for free

Gems Bonanza

Embark on a thrilling gem-collecting adventure! Gems Bonanza offers 8x8 grid slot featuring cascading symbols that form clusters to win. Follow the colourful markings on the grid to unlock exciting Spin Features.

Unleash the power of the Nuclear Spin, which clears the grid for a fresh start, or benefit from Lucky Wilds that appear randomly. Activate the Gold Fever feature to combine multiple Spin Features for maximum excitement. Reach the final level and enjoy a massive 10x win multiplier for a chance at a colossal treasure!

• Software: Pragmatic Play
• Buy free spins cost: 100x bet
• Max win: 25000x bet

Buy Bonus feature description

The Gold Fever feature starts at level 1, with each level guaranteeing all spin modifiers and a 2x multiplier. Collect winning symbols to advance through up to 5 levels.

Modifiers

• Blue Mark: Nuclear – Clears the screen and adds new symbols.
• Pink Mark: Wild Gem – Transforms all instances of one random symbol into Wilds.
• Brown Mark: Squares – Adds random 2x2 blocks of the same symbol.
• Red Mark: Colossal Symbol – Adds a random 3x3, 4x4, or 5x5 block of the same symbol.
• Green Mark: Lucky Wilds – Adds 5 to 15 Wild symbols in random positions.

Play Gems Bonanza slot in demo for free

Starburst XXXtreme

NetEnt has taken the beloved Starburst slot to new heights with Starburst XXXtreme. This revamped version keeps the classic space-themed charm while introducing exciting new features.

Prepare for a more thrilling experience with increased volatility and the potential for bigger wins. The iconic Starburst Wilds are back, along with a Random Wilds feature that adds an extra layer of excitement. For those seeking even more action, the game offers the option to purchase guaranteed Starburst Wilds on your next spin.

• Software: NetEnt
• Buy free spins cost: 1 guaranteed Starburst - 10x bet, 2 guaranteed Starbursts - 95x bet
• Max win: 20000x bet

Buy Bonus feature description

The XXXtreme Spins feature guarantees Starburst Wild symbols on reels 2, 3, or 4. Very Starburst Wild carry a random multiplier.

• Cost: 10x the bet for 1 guaranteed Wild per spin, or 95x the bet for 2 guaranteed Wilds per spin.
• Activation: Remains active until you choose to deactivate it.

Play Starburst XXXtreme slot in demo for free

Criteria for Choosing the Best Buy Free Spins Feature Slots

RTP (Return to Player)

Return to Player (RTP) is a crucial factor when selecting a slot. A higher RTP means better odds of receiving a return on your bets over time. Look for buy feature slots with high RTP percentages to maximize your chances of winning. Some online slots offer different RTP when using the Buy Free Spins feature. Always check the info before you start playing with real money.

Volatility

Volatility affects the risk and reward balance in a slot game. High volatility slots offer bigger, less frequent wins, while low volatility slots provide smaller, more frequent payouts. Choose a slot with volatility that matches your risk tolerance and play style.

Graphics and Theme

The visual appeal and theme of a slot can greatly enhance the gaming experience. Well-designed graphics and engaging themes contribute to a more immersive and enjoyable play session.

Our super secret tip - If you are playing with real money, just choose the slot with the highest RTP. If you are playing online slots in the demo version, play all of them and choose the one you like bets. 

Why Are Buy Free Spins Feature Slots So Popular?

One of the biggest reasons buy feature slots are so popular is because they offer instant gratification. In traditional slots, you might have to spin a hundred times before hitting a bonus round. But with buy feature slots, you can skip the wait and dive straight into the most exciting part of the game. It’s like cutting in line at a theme park – who wouldn’t love that?

Players love having more control over their gameplay. Instead of relying solely on luck to trigger bonuses, you can choose when you want to enter these special rounds. This control can make the game feel more strategic and less random, which is a huge plus for many people.

These slots ramp up the excitement factor. Knowing that you can trigger a bonus round whenever you want keeps the adrenaline pumping. It’s way more engaging than just spinning and hoping for the best. The immediate access to high-stakes action is a thrill that keeps players coming back.

With buy feature slots, there's often a higher potential for bigger wins. You have more chances to hit substantial jackpots since you’re directly entering bonus rounds – where the big payouts usually happen. It’s a bit like paying an entry fee to join a high-stakes game where the rewards are much sweeter.

Controversy about Buy Free Spins Feature

On the other hand, there are some counterarguments for this feature. For example, the UK Gambling Commission (UKGC) banned this feature for UK players in 2019 because some players may have problems controlling their play and lose a lot of money. Let’s face it. This feature costs a LOT. In some cases hundreds of times your initial bet. And the result most of the time does not cover the increased bet.

I probably myself would not try it with in real online casinos. I have tested all the best slots with the buy bonus feature, and in my opinion, it is not worth trying with real money. But, in the demo, it is really fun.

Tell us in the comments. What do you think? Do you use the Buy Bonus feature in real casinos with real money?