A Complete Guide on Slot Bonus Features
Gaming developers are constantly on the hunt for the next big thing in slots and casino game features. Slot bonus features provide punters with new and exciting possibilities of playing their favourite games. Read on to find the best of them in our guide!
- What is a Slot Bonus Feature?
- Different Kinds of Bonus Features
- How to Trigger Slot Bonuses
- The Bonus Buy Feature
- Finding Out if a Slot Game Has Bonus Features
- What To Look Out for When Choosing a Slot Game
- Top Slot Games With Bonus Features
- Game Providers
- How Do You Know if a Slot Game Is Legit?
- Slot Bonus Features Summary
- Slot Bonus Features FAQs
- Return to player (RTP): 96.00%
- Volatility: High
- Release date: 2017
- Game type: 7x7-reel, 1-line
- Features: Cluster Pays, Free Spins, Replicating Symbols, Cascade Wins
£0.10 - £100
Cluster Pays, Free Spins, Replicating Symbols, Cascade Wins
- Return to player (RTP): 95.99%
- Volatility: Medium-High
- Release date: 2021
- Game type: 5x5 reel; Cluster Pays
- Features: Prize meter, free spins, cluster wins, multipliers
Prize meter, free spins, cluster wins, multipliers
- Return to player (RTP): 94.99%
- Volatility: Medium-High
- Release date: 2022
- Game type: 5x3-reel, 20-line
- Features: Free spins, multipliers, random cash prizes, retro style
Free spins, multipliers, random cash prizes, retro style
El Paso Gunfight xNudge
- Return to player (RTP): 96.05-96.35%
- Volatility: High
- Release date: 2021
- Game type: 5-reel
- Features: xNudge Wilds, free spins, Bonus Buy, choice of volatility modes, Jumping Wilds
No Limit City
xNudge Wilds, free spins, Bonus Buy, choice of volatility modes, Jumping Wilds
Longmu and the Dragons
- Return to player (RTP): 95.40%
- Volatility: Medium
- Release date: 2021
- Game type: 5x3-reel, 50-lines
- Features: Cluster Free Spins, multiplier wheel, cascades, minigame
Cluster Free Spins, multiplier wheel, cascades, minigame
Jack and the Beanstalk
- Return to player (RTP): 96.28%
- Volatility: High
- Release date: 2011
- Game type: 5-reel, 20-lines
- Features: Free spins, walking wilds, stacked wilds, expanding wilds
Free spins, walking wilds, stacked wilds, expanding wilds
What is a Slot Bonus Feature?
You’ll find that many top casinos will have tonnes of slots with terrific bonus features in store, allowing you to trigger a prize feature following a regular spin. Bonuses may trigger randomly or may be activated when you land scatter symbols.
Bonus features should activate regularly, so it pays to look around for slots with high hit rates. Average payouts should also be attractive enough to make the spins leading up to a hit worthwhile.
Benefits of Slot Bonuses
An online slots bonus is a great way to enhance your prizes without paying extra. You only pay for playing the base game, after which bonus features are triggered whenever you land special symbols.
All the top slots online offer a mix of free spins, respins or prize wheel features. In some games, you can even activate a progressive jackpot which is linked to multiple online casinos.
Where To Find Slots With Bonus Features
Leading slot developers offer a variety of games with lucrative bonuses, all the while offering cutting-edge graphics and animations as you spin the reels!
Let’s face it, you’ll be hard pressed to find a slot without any kind of bonus feature at all – we’re not stuck in the mid-2010s after all. Rest assured that all casinos we recommend here at Top10-CasinoSites will have you covered!
However, it's also important to do your own research as well. We always recommend testing out slots for free if possible (i.e. via the demo version) before going ahead and staking any real money.
Different Kinds of Bonus Features
Below, we've listed some of the most common features slot developers implement to enhance their games.
Free spins are an attractive bonus feature popular with most players, and are found in a huge number of slots online.
A respins bonus is an increasingly common feature in new online slots, usually received after any win or cascade, or by landing scatter symbols.
Some newer slots offer special respins where the spins reset. For example, you may begin with 3 respins, which reset to 3 after each win. Once the respins have run out, so does the bonus feature.
A scatter symbol is simply an icon that pays out a prize wherever it lands on the reels without needing a winning combination. You earn a cash payout for each scatter that appears. The key here is to aim for hitting several scatters at once to get big rewards!
Most 5-reel slots feature wild symbols, which replace all regular symbols and helps to fill in the gaps on a payline. Some slots pay a jackpot if you land 5 wilds on a payline.
Multipliers are special symbols that enhance your payout on a winning spin. Typically, multipliers apply to wilds (jokers that replace other regular symbols). However, multipliers can also appear as dedicated symbols on the reels.
Most of the time, multipliers are applied to free spins bonuses. You may trigger, for example, 10 free spins with a 3x multiplier on every spin.
Megaways is an innovative slot mechanic devised by Big Time Gaming (BTG). Here, each reel contains anywhere from 2–7 symbols at a time. The number of paylines therefore changes from one spin to the next. Hit 7 symbols on each reel, and you’re looking at a maximum of 117,649 ways to win on a single spin.
The beauty of Megaways is that multiple slot developers have adopted the mechanic in their games. As well as the original BTG Megaways game, Dragon Born – released back in 2015 – you can load up recent games such as NetEnt’s Gonzo’s Quest Megaways, Red Tiger’s Ali Baba’s Luck Megaways and BTG’s own hit game, Bonanza Megaways.
Each developer adds its own unique twist on the Megaways mechanic, adding additional features such as Falling Wilds, respins, and prize multipliers.
Megaclusters works a little differently. The mechanic was unveiled in 2020 with the release of BTG’s Star Clusters game. You win a cash prize by matching symbols horizontally or vertically. At the same time, matching symbols split into four smaller symbols which in turn offer the opportunity for bigger wins.
You can discover the very best Megaways and Megaclusters slots with our exclusive round-up. We’ll show you in a little more detail how you can make the most from BTG’s amazing bonus features.
Cluster Pays, or Cluster Win, slots were popularised following successful apps such as Candy Crush. Instead of traditional paylines triggering payouts, you win a prize by matching groups of symbols in adjoining spaces. Matching “clusters” can run horizontally or vertically but normally must consist of at least 5 symbols to pay.
In addition, winning clusters then disappear after a spin, leaving the symbols above to drop into their place. This can create even more payouts, triggered totally for free!
NetEnt casino games are some of the most beloved in the industry. The developer has produced several Cluster Pays games. Games such as Aloha! Cluster Pays and Shangri-La offer stacked symbols which combine to produce big payouts. You can also trigger a free spins bonus in both games.
If you want great Cluster Pays slots with bonus features, check out some of Pragmatic Play’s games. Sweet Bonanza is probably the closest game you’ll get to a classic mobile app such as Candy Crush. The 6 reels are filled with sweets which award prizes whenever you match 5+ in any direction.
The prize wheel evokes classic slots from Las Vegas, such as IGT’s Wheel of Fortune. In a land-based slot machine, the prize wheel is often represented by a physical wheel that spins during a bonus game. However, in online slots, the wheel is animated and governed by a random number generator (RNG).
Prize wheels are usually triggered at random, either after a single spin or by triggering a bonus. The wheel features segments containing cash amounts, multipliers, or free spins. There may also be a jackpot displayed on some of the wheel sections.
Some progressive jackpot slots, such as Microgaming’s Mega Moolah, use a prize wheel to determine their biggest prizes. When you trigger the special feature, you must spin the wheel and line up the arrows in order to unlock the huge progressive jackpots offered.
Instant Win/Click to Win
The Instant Win feature offers you the chance to win extra cash without leaving your regular game. The Instant Win can be triggered at random after any regular spin. Special reel positions are highlighted, and you must select from the hidden icons on the screen. You’ll reveal a cash prize which is immediately added to your bankroll.
Lots of classic slots and early 5-reel slots offer a gamble feature. Here, you have the chance to double your win by playing a small bonus game.
The Pick’em Bonus has been a popular feature in slots for years. You activate the game by landing scatter symbols on the reels. You are then presented with 10–20 secret symbols from which you must pick a handful to reveal cash prizes or free spins.
Win Both Ways Paylines
Win Both Ways is a fun take on the traditional paylines found in many slots with bonus features. In regular online slots, paylines generally run left to right. You must line up matching symbols starting at reel 1.
In Win Both Ways slots, however, paylines run both left-to-right and right-to-left. For instance, a 20-payline Win Both Ways slot may offer 10 paylines going left-to-right and 10 running from the right.
How to Trigger Slot Bonuses
In most slots, bonus features are triggered by hitting scatter symbols. Typically, you must land 3 scatters in any position on the screen – they don’t have to form part of a winning payline. Some slots bonuses trigger if you land scatters on specific reels, such as anywhere on reels 1, 3 and 5.
Some slots offer a ‘second chance’ if you only land 2 scatters. You may get to spin another reel in order to land that elusive third scatter and trigger the bonus.
Finally, some of these features simply trigger at random. You won’t know when the bonus is going to activate, but the decision is governed by the game’s random number generator (RNG). RNGs are regularly checked for fairness as long as the developer is licensed and reputable.
The Bonus Buy Feature
Why wait when you can skip straight to the action? That’s where a Bonus Buy feature comes in.
With the Bonus Buy, you can pay a set stake and immediately trigger the slot’s main bonus game. The price for activating the feature is clearly displayed on the screen. Simply pay your stake and play the bonus. However, be aware that the Bonus Buy isn’t readily available at UK-facing casinos.
Finding Out if a Slot Game Has Bonus Features
To find out what a slot has to offer, open the ‘Instructions’ or ‘Paytable’ tab to bring up details on the game.
The paytable usually lists every bonus feature in the slot and how you can trigger it. You’ll also see a list of payouts, jackpot prizes, and other information such as RTP.
What To Look Out for When Choosing a Slot Game
It’s important to choose the right games if you’re hunting out slots. Here are some of the criteria we recommend looking for.
Top Slot Games With Bonus Features
Not sure where to start? We've compiled a list of our favourite games below to help you out.
Viking Runecraft – Play’n GO
Few Norse-themed slots offer progressive bonus structures like Play’n GO’s Viking Runecraft. You can win up to 5,000x your stake as you climb the levels and try to reach Valhalla.
Viking Runecraft utilises a Cluster Pays mechanic where you win cash by matching groups of runes on the screen. Winning clusters disappear and trigger a free respin too.
In addition, you climb a prize level by clearing a set pattern of symbols on the reels. As you progress, you earn special modifiers based on the Norse gods. For example, Thor will strike lightning on the reels and add wilds. Odin, meanwhile, creates groups of wilds that can enhance your payouts.
While the RTP of Viking Runecraft is only 96.00%, the range of bonuses makes the slot worth playing.
Lava Gold – Betsoft
Lava Gold is an atmospheric slot from BetSoft set in a prehistoric jungle. As you land clusters of matching dinosaur symbols, you’ll fill a special prize meter alongside the reels.
You trigger a free spins bonus when the lava meter is full. In addition, you can land volcano wilds which substitute for all other symbols. Best of all, the free spins begin with a 1x multiplier on wins. The multiplier increases by 1 for every extra win, which means you could hit a 10x multiplier on your final free spin.
Cluster Pays slots are popular in 2022 as the quality of the software improves. You can win a special jackpot if you hit a cluster of 25 matching icons across the reels.
With all of this together with an RTP nudging 96%, what’s not to like about Lava Gold?
Achilles – Yggdrasil
Yggdrasil’s 2022 release, Achilles, is a fun take on the legend of the Trojan War. The 5-reel slot features various modifiers based on icons from the story, such as Agamemnon, Achilles, and the Trojan Horse.
Features include free spins with sticky wilds and the Skinny Greek Soldier Modifier, where rocks are fired across the reels to leave random mystery symbols.
The RTP of 94.99% is a little lower than other Yggdrasil slots, but the breadth of bonus features makes Achilles worth playing.
El Paso Gunfight xNudge – Nolimit City
Nolimit City have pioneered online slots over recent years with the best casino bonus games. El Paso Gunfight xNudge uses one of Nolimit City’s most popular bonus features.
In the Wild West-themed slot, you get to choose a reel setup. The Deputy Badge or Marshal Badge can appear on the reels, determining the volatility of the gameplay.
In addition, the slot features xNudge Wilds. These are 3-high wilds that replace all regular symbols. However, if the wild isn’t fully in view, it can nudge higher up to fill the reel.
El Paso Gunfight xNudge also includes a free spins bonus round. During the feature, Jumping Wilds can appear and will move into new reel positions on every spin.
Longmu and the Dragons – Red Rake Gaming
Longmu and the Dragons is an Oriental-themed slot by Red Rake Gaming that incorporates Cluster Wins with free spins and some amazing graphics.
You can trigger the Moons of Fortune minigame by landing 3+ scatters on different reels. You win 3–5 free spins with special cash prizes awarded depending on what’s displayed on the screen.
In addition, you can enhance your mini-game wins by spinning the Multiplier Wheel. Your prize is multiplied by 2x to 10x, depending on where the wheel stops.
Longmu and the Dragons also features a separate free spins bonus. Whenever you hit 5+ winning cascades during the base game, you trigger the free spins. It’s possible to trigger up to 30 free spins.
Jack and the Beanstalk – NetEnt
Jack and the Beanstalk is one of NetEnt’s most popular slots, offering some of the best bonus features around. You can trigger free spins, and there’s even a jackpot worth 600,000 coins. The game also introduced slots players to the Walking Wild feature.
The free spins bonus is pretty standard, but the Treasure Collection feature makes the game special. During the game, you collect special symbols which earn you special modifiers such as stacked wilds and expanding wilds.
When a wild appears on the reels, you earn a re-spin. During this spin, the wild shifts along one reel to the left. You then re-spin, and the wild keeps moving until it disappears from the reels. Plus, you win a 3x multiplier on any winning payline the wild helps to complete.
So, who are the brains behind all these fantastic bonus features? To find out, check out our below compilation of the most renowned providers in the industry, whose games can be also found at premier cryptocoin casinos or GBP-accepting gambling sites.
How Do You Know if a Slot Game Is Legit?
There is an easy way to know if a slot is above board. Legit slots are designed by online casino providers who have the required online gambling licences. Gaming licences are issued by approved bodies such as the UK Gambling Commission and Malta Gaming Authority. In addition, legit games are only supplied at online casinos that also have the proper licences in place.
Games must also be tested and are regularly audited by established labs such as eCOGRA. Testing labs perform regular checks on a game’s random number generator and authenticate average RTPs (Return to Player Percentages).
Slot Bonus Features Summary
With continuous advancements in casino software, there has never been a more exciting time to try out different games online! Pick one of our recommendations above to experience the thrill of playing for free or real money with a variety of features, including free spins, wilds, and Megaways.
Slot Bonus Features FAQs
An online slots bonus is a special in-game feature where you can win extra money or a jackpot. You’ll find a list of bonus features and payouts in the slot’s paytable.
You can trigger the best slot bonus features multiple times as long as you pay the correct stake. Some slots also offer a Bonus Buy feature where you can trigger the bonus automatically.
Absolutely. Most online slots are available in Demo Play mode without the need to pay. Simply log in to your casino account and choose the Freeplay mode in the slots lobby.
Legal slots are developed by licensed casino game developers. In addition, only legit slots are offered at regulated online casinos.
The RTP is the Return to Player percentage. It’s the theoretical payout made to all players over millions of slot spins.
The best providers offer a range of games with smooth graphics and interesting online slots bonus features. Slots must be governed by a random number generator.
Reputable online casinos only supply slots that are independently tested for fairness. RNGs are regularly audited to ensure that every spin is fair and reliable.