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Best Bonus Buy Slots at Sweepstakes Casinos

Tired of spinning and waiting for that elusive bonus round? You’re not alone. The good news? Most slot games now let you skip the grind and buy your way straight into the action. It’s called the Bonus Buy feature, and it’s changing how players experience sweepstakes slots.

But here’s the catch: not all feature buys are actually worth your SC. That’s why we rolled up our sleeves and handpicked the top 5 Bonus Buy slots available at sweepstakes casinos. We’re talking about games that deliver on excitement, value, and potential rewards.

In this guide, you’ll not only find our top picks but also get the inside scoop on how Bonus Buy works, why players love it (and why some don’t), and what to watch out for before you click that ‘Buy’ button. Let’s begin.

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US Online Casinos with Feature Buy Slot Machines

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SweepsKings Top 5 Picks: Popular Feature Buy Slot Games

Plenty of slots offer Bonus Buy features, but only a few truly stand out. We tested a wide range of sweepstakes casinos and picked five of the best Bonus Buy slots:

Mystery Garden – best for cheap Bonus Buys

Rad Maxx – best for FeatureSpins

TNT Bonanza 2 – best for Super Buys

Super Hot Teapots – best for combo Bonus Buys

Duck Hunters – best for several options

#1 Mystery Garden

mystery garden slot

#1 Mystery Garden

  • Developer: BGaming
  • Volatility: Medium
  • RTP: 97%
  • Max Win: 2,000x
  • Available at: WOW Vegas

If you prefer lower-cost Bonus Buys, Mystery Garden by BGaming is a great place to start. Set in an enchanting Victorian garden, this game has a high RTP of 97% and a relaxing atmosphere.

But the real appeal lies in its affordability, as the bonus round can be purchased for just 60x your stake. That’s low for a feature buy slot, making Mystery Garden a practical choice for players who want to experience the fun of bonus rounds without burning through their GC or SC too quickly.

In the base game the idea is to line up symbols on the 10 paylines, and in the bonus feature, winning symbols become sticky, building up over the course of the round and offering repeated wins. The calm atmosphere pairs well with the medium volatility and reliable payouts.

250,000 WOW Coins + 5 Free SC

#2 Rad Maxx

rad maxx featurespins

#2 Rad Maxx

Rad Maxx came out as something of a sequel to the popular RIP City slot but with an interesting new twist: now you can form lines from all four directions on the grid! It’s a unique concept, but it has to be triggered by landing a Wild Plus symbol.

In normal play in the base game you’ll get one of these perhaps every 15-20 spins, but there’s a FeatureSpins option that guarantees you a Wild Plus on every spin. FeatureSpins is available in many Hacksaw games, by the way.

In Rad Maxx, when you switch it on, you’ll be seeing lines from all directions consistently. You will have to pay 50x your wager for the privilege but it increases your chance of stacking wins, and makes this excellent slot even more fun.

500,000 Gold Coins + SC 10 FREE

#3 TNT Bonanza 2

Bonus options for free spins available

#3 TNT Bonanza 2

A Bonus Buy is where you pay to enter the regular bonus, skipping the grind of spinning in manually, while a Super Buy is where you pay extra for a juiced-up version with better odds of big wins.

One great example of a Super Buy is TNT Bonanza 2 by Booming Games. And “boom” is the onomatoepeia of choice here as you try to explode same-color gems in this mining-themed, scatter pays slot.

Heading into the bonus round means the addition of Multiplier Bomb, Cascading Bomb, and Mystery Bomb symbols, and these can charge your wins in a big way, so you’ll want them to land as often as possible. Fortunately, you can guarantee this with Super Buys – 200x your wager guarantees 1 Bomb, 400x guarantees 2, and 750x guarantees 3, which is where the carnage really ensues.

7,500 Gold Coins + 2 Sweeps Coins

#4 Super Hot Teapots

super hot teapots combo bonus buy

#4 Super Hot Teapots

One of the joys of slots is when features stack on top of each other to supercharge your game, and in Super Hot Teapots from 3 Oaks that’s easy to kickstart using a combo Bonus Buy. It’s certainly one way to get you closer to the 20,000x max win.

You see, in the base game it’s possible to trigger 4 different types of feature for the Hold & Win-esque bonus round. Boost adds a random value to all the symbols on the board, Extra expands the grid from 5 x 3 to 5 x 5, and Multi adds random multipliers to random squares. Finally, the Master Pot drops bonus symbols into empty spaces on the grid.

Having one of these in action can land some tasty wins, but how about having all four running all at once? It might sound like madness, but for 300x your wager, it’s entirely possible. There’s even a higher volatility version that you can unlock for 500x your wager.

50,000 GC + FREE SC 1 + 200% Match

#5 Duck Hunters

duck hunters bonus round

#5 Duck Hunters

Nolimit City is a prolific studio with diehard fans around the world, and one of its most popular games of recent times is Duck Hunters. Gameplay revolves around a tumbling scatter pays format, plus highlighted squares with multipliers that double everytime a win is registered – all the way up to 8,192x!

Spinning into the free spins (where highlighted squares are sticky) is said to be a 1 in 203 chance, so doing a Bonus Buy is much more straightforward, and NLC is known for its plethora of options here.

In Duck Hunters we have 4 Bonus Buys available: Duck Hunt Spins (70x the bet), Hawk Eye Spins (200x the bet), Big Game Spins (600x the bet), or a Lucky Draw (235x the bet). With the first three levels, the higher the price, the more upgrades you get, while the Lucky Draw picks from the former three randomly.

Then we have 4 Nolimit Booster options too – they increase the chance of desirable things happening in the base game. The xBet option guarantees a Scatter for 2x your wager, making it more likely you’ll spin into the bonus. The other options prime your grid with multipliers on highlighted squares.

100,000 GC + 2.5 FREE SC

What is a Bonus Buy Feature?

A Bonus Buy slot feature allows players to bypass the long wait for a bonus round and jump directly into it. In other words, instead of spinning the reels for a few minutes and waiting for the random arrival of the bonus round, you can purchase it whenever you want.

For example, in Le Bandit, you need at least 3 Scatter symbols to get a round of free spins. But with the buy feature (titled ‘Buy Bonus‘ in this slot), you instantly get the 3 (or more) Scatters and start spinning for free with bonus features.

In the majority of slots, you can spot this as Bonus Buy. However, I’ve also seen games calling it ‘Instant Buy‘, ‘Feature Spins‘, ‘Buy Bonus‘, and ‘Buy Spins‘.

Disclaimer: Getting a bonus round doesn’t guarantee wins. The Buy button only allows you to skip the waiting and enter the special mode; how much you win (if anything) is another thing.

How the Bonus Buy Feature Works in Online Slots

The logistics of a Bonus Buy feature are very simple. You get the slots bonus round, just like you would by playing; only here, you buy it by using your GC and SC. If you play using your GC, it’s just for fun, but if you choose to use SC, then you’re eligible to get real cash prizes. Of course, the amount you spend correlates to the current stake, so you can easily increase or decrease the buy-in by changing the stake.

Depending on the provider, you get different variations of instant buy. For example, Spinomenal generally offers you only one buy feature, whereas Hacksaw and Nolimit City will usually offer a Bonus Buy, a Super Bonus Buy, and antebets.

In general, despite the kind of bonus round you’re buying, the feature works the same. From my experience, you find the buy button (although it can have a different name) at the bottom of the screen on the left-hand side. Once you click on it, you get the available options and how much it will cost. If you’re satisfied, click buy and the feature begins!

Tip: Check if the RTP of the game changes in the bonus round. Some slots like San Quentin xWays have a better RTP if you go for a higher paid round.

The cost of buying instantly into the slot bonus round varies, but it’s often priced around 100x the bet size. Then Super Bonus Buys can cost much higher, especially in Nolimit City slots, though the rewards are usually correlated.

The Instant Buy Controversy: A Feature Players Love to Debate

However, the Bonus Buy feature isn’t without its critics.

While it’s a favorite among players who want to skip the grind and get straight to the action, it’s also stirred up plenty of controversy. In fact, some countries, like the UK, have outright banned it due to concerns around responsible gaming. So, what’s the issue exactly?

Some players argue that the Bonus Buy option takes the fun out of slots. It removes the thrill of triggering a bonus organically, turning what should be a suspenseful challenge into a paid shortcut. Others point out the obvious risk: you might easily pay more for the feature than you win from it on average.

On the flip side, many players (and we’ve experienced this firsthand) love the time-saving aspect. Instead of spinning for ages, hoping to hit the bonus round, you can pay a flat rate and dive right in. In some cases, this can even be more cost-efficient than chasing it the traditional way.

We will admit that in some modern slots it can feel like you’re being forced into the Bonus Buy if the chances of spinning in from the base game are very low, and this can somehow take the charm out of a game. But at the end of the day, Bonus Buys give you more exciting gameplay at the touch of a button, so many players gravitate towards them immediately. This is especially true with slots streamers, so it’s no surprise providers are building them into their games more prominently.

The bottom line? It’s all about how you like to play. For some, Bonus Buy features are a thrill, while for others, it’s a pass. As always, it’s important to play smart, know your budget, and understand the risks involved.

Pros & Cons of the Bonus Buy Slot Category

The Bonus Buy feature can be a good boost to your gameplay, but you should know the positives and negatives before you give it a try.

Pros
  • Instant access to bonus rounds without waiting
  • Can have a higher RTP
  • Predictable cost
  • Chance to unlock the max win
  • Some ultra-rare features might still be organic-only (particularly Hacksaw slots)
Cons
  • The upfront cost is significant
  • Generally attached to games with high volatility
  • Supports risky gaming behavior
  • Super Buys often trigger features you can't unlock through normal play (like guaranteed higher multis)

Feature spins that guarantee special elements, ante bets, boosted scatters, and other variations of the Bonus Buy are often more suitable for risk-averse players who want to streamline their way to high max wins at a lower cost.

How to Benchmark Feature Buy Online Slots

How do you choose a good game where the instant buy won’t waste your funds? Our team agreed on a few basic steps, but there are no guarantees with online slots.

Bonus Buy cost: First, check how much you need to spend to get into the bonus round. Playing 100 spins may sometimes be better and give you more chances to hit the bonus round than paying 200x your bet. Developers often publish the bonus hit frequency, so that’s a metric you should definitely consider beforehand.

Change in RTP: Some slots change the RTP when you enter a bonus round. For example, from 96% they can jump up to 97%, meaning you can get more in the long run. But this could go the other way around, as well, so best check – better safe than sorry.

Testing the game: Instead of diving straight into the game and the buy-in with SC, you could see how the game works and learn its mechanics with GC and playing for fun.

Bonus variation: As we mentioned, Bonus Buy features come in different types – from accumulating tokens that can give free entrance to the bonus round to choosing between a normal and super buy-in. Experiment with each and don’t just go for the big bucks.

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Our Thoughts on Feature Spin Slots

Team SweepsKings has a unanimous take on the Bonus Buy feature: we like it, although we take it with a grain of salt.

You get to skip tedious rounds of losing your GC or SC and jump straight into some action, but we can’t help but wonder if the feature is worth it every time.

When I play slots that have good winning potential in the base game, I don’t buy the bonus outright. For instance, in Lucky Penny you can get 1,000x multipliers on any spin, not just during the feature. On the other hand, landing a big win in Fire in the Hole 3 during the plain base game is nearly impossible, making the instant buy options a welcome, yet risky addition.

That’s why we suggest choosing Bonus Buy slots carefully. Consider the list of tips above, but also don’t forget to pick a game that is fun for you – that’s what sweepstakes gaming is all about!

FAQs

What are the best slots with a bonus buy feature?

Some good options are Duck Hunters, TNT Bonanza 2, and Super Hot Teapots. Each of these comes from a prominent developer and has a different way of approaching bonus buy features.

How does a bonus buy work in sweepstake slots?

The bonus buy feature in a sweepstakes casino slot works the same as in regular casinos. You purchase the bonus round with GC if you play for fun or with your SC if you want to win real-money prizes - just click the Buy button. Depending on the game, you may have several options. Pick the best to your liking, pay the price, and enter the bonus round in a flash!

Does the RTP stay the same when I buy a slot’s bonus round?

It depends on the slot. Some games may change their RTP once you purchase a bonus buy round. Such is San Quentin xWays, where the RTP jumps from the regular 96.03% to 96.95% for the last option of the instant buy feature.
Bogdan Lunkan

Author: Bogdan Lunkan

Updated:

Bogdan has been playing sweepstakes casino games before it was cool! He has achieved top VIP status on a number of sweepstakes casinos and regularly bets the max when playing his favorite slots. Bogdan takes you inside the mind of a high-stakes player, and following his tips, you too can redeem lots of Sweeps Coins.
Bogdan has been playing sweepstakes casino games before it was cool! He has achieved top VIP status on a number of sweepstakes casinos and regularly bets the max when playing his favorite slots. Bogdan takes you inside the mind of a high-stakes player, and following his tips, you too can redeem lots of Sweeps Coins.