Free Spins, Multipliers, Prize Pickers. So many bonuses, find out how to choose the best.

What are Slot Bonus Games?

Slot bonus games are features hidden within the game that differs from the main game. These bonus games come with many thrilling features that can lead to big wins. Typically, the slot game will change and essentially open a new game for you to play. Bonus games are undeniably the highlight of any slot game out there. Although not every online slot has a bonus game. So, ensure you read the slot information to see if it has free spins or a bonus game.

Our Top Picks for Best Slot Bonus Games

Money Train 2

Money Train 2 Slot Free Spins

Embark on a breathtaking train ride alongside the best crooks in town. Land yourself  3 bonus symbols or 2 bonus symbols and a persistent symbol to trigger the bonus game. In Money Train 2, you start with 3 spins. You need to land at least 1 symbol on the board every spin, and the spins reset back to 3. If this isn’t achieved, then you will begin to lose your lifelines. By landing a symbol, you are rewarded with another spin. The outlaws can help you to get some pretty sweet wins. These special symbols can multiply, collect and payout multiples of themselves.

In addition, you can land persistent characters that activate with each spin. However, the un-persistent characters that run out of steam after a single activation, that is, until the Necromancer turns up to bring them back to life! This action-packed slot has a max potential of 50,000x, and it definitely ticks all the boxes when it comes to the best bonus games!

Where to Play Money Train 2

Deposit £10
Get 80 No-Wager Free Spins
Free Spins On Book Of Dead
18+. New players only, Gamble Responsibly. First deposit only. 80 Free Spins. Min deposit £10. Excl. new players in N.I. Each Free Spin valued at 10p. Full T&Cs apply. #AD Begambleaware
No Deposit Required
Get 20 Extra Spins
Extra Spins On Fortunium
New players only. Min. dep £20. Max. bonus bet £5. 20 bonus spins on Fortunium (No deposit required) on registration plus 200 Bonus spins on Book of Dead on your 1st deposit. Winnings from all spins credited as bonus funds and capped at £20. Bonus funds are separate to Cash funds & subject to wagering requirement (40x deposit plus bonus). Only bonus funds contribute towards wagering requirement. Bonus funds must be used within 30 days, spins within 72hrs. Affordability checks Terms apply. #AD Begambleaware

Fat Drac/Fat Santa/Fat Rabbit

Fat Drac Free Spins

The Fat series from Push Gaming is an excellent selection of slots to play. They all follow the same theme, and that’s to feed your character in the bonus game until they fill the entire screen! These fun festive games are perfect for Halloween, Christmas and Easter to bring some festive joy to your gameplay. Without a doubt, fat Drac takes this up a notch as the latest instalment. Featuring instant prizes, mystery symbol picking features and last but not least, the Fat Bat feature that collects all instant win prizes on the screen! Read more about Fat Drac slot now.

Where to Play these Games

Get up to:
£50 + 50 Extra Spins
Using Code "BPLAY50"
First Deposit Only. Min. deposit: £10, max. Bonus £50. Game: Book of Dead, Spin Value: £0.10. WR of 30x Deposit + Bonus amount and 60x Free Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the Free Spin winnings and bonus amount or £5 (lowest amount applies). Free Spins must be used before deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. 18+, Gamble Responsibly, new customers only, full T&Cs apply. #AD Begambleaware
Get up to:
£200 + 11 No-Wager Free Spins
Free Spins On Starburst
18+. New players only, Gamble Responsibly. One bonus offer per player. Minimum initial deposit £10. Max bet is £20. Bonus funds are 100% up to £200 on initial deposit. Bonus funds must be used within 60 days. 100% up to £200 will be paid out in 10% increments to your main account balance. Wager amount 35x. Account balance is withdrawable at any time. Upon withdrawal, any remaining bonus spins are forfeited. 7 days to activate the spins: bonus spins expire 24 hours after activation. Full T&Cs apply. #AD Begambleaware

Who Wants to be a Millionaire Megapays

Who Wants to be a Millionaire Megapays Free Spins

Who doesn’t want to become a contestant on “Who Wants to Be a Millionaire” to possibly win huge jackpots? It’s a no-brainer! The bonus consists of picking from A, B, C or D and making your way up the ladder. This allows you to get up to the max free spins; however, unlike the tv show, your general knowledge won’t help you as it is a totally random choice.  Luckily, there are safety nets at 10 and 20 spins.

Another critical point is that you can use the well-known Phone a Friend, 50/50 and Ask the Audience for help. Win up to 72,310x in this incredible game by BTG. If you want to take the hot seat, read about the Who Wants to Be a Millionaire slot now.

Wild West Gold

Wild West Gold Free Spins

This exciting game from Pragmatic Play takes you back to the wild wild west, with wins of up to 6,750x your bet. The free spins are accessed by landing 3 scatters. In the bonus, any wilds that land can have a multiplier up to 5x and become sticky for the rest of the bonus. Meaning it stays in place and keeps paying out as long as it’s in win lines. This bonus games excitement is heightened with the soundtrack of piano playing, general crowd noise, and gun blasts, which makes you feel immersed in the action. If you don’t have a lucky bonus, this game pays out 10x your bet if your bonus win is below 10x. So, generally speaking, it’s a win-win.

Where to Play Wild West Gold

Get up to:
£50 + 50 No-Wager Free Spins
New UK customers only. Min. first-time deposit - £10. Max. bonus - £50. Max. payout = £1,000. You must wager the value of your bonus money 35 times before any winnings from the bonus become withdrawable. Free spins only valid on eligible games. Each free spin is worth £0.10. Payment method restrictions apply. T&Cs Apply. 18+ Gamble Responsibly. #AD Begambleaware
Get up to:
£100 + 300 Extra Spins
Extra Spins On Eligible NetEnt Games
18+ Full T&Cs Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Ewallets excluded. #AD Begambleaware


Mysterious slot bonus game

This spooky slot from Pragmatic Play comes with a choice of 2 bonuses. The fan favourite is the roaming wilds feature. In this feature, any wild you collect during the free spins roam the reels and reactivate when you land more wilds. The other bonus features clocks that can multiply your wins. This game has a max potential of up to 9,648x! So if you fancy a trip to the haunted house filled with ghosts and ghouls, then you can read more about Mysterious now.

Where to Play Mysterious

Get up to:
£100 + 300 Extra Spins
Extra Spins On Eligible NetEnt Games
18+ Full T&Cs Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Ewallets excluded. #AD. Begambleaware
Stake £50
Get £5 Free
£5 Bonus Playable On Eligible Evolution Games
Full T&C's Apply. New players only. 7 days to claim offer and deposit £50 with further 7 days to wager on Live Casino 1x. Wagering contributions vary. £5 bonus has 3 day expiry to use on any eligible Evolution game. #AD 18+ Begambleaware

Book of Dead/Rise of Merlin/Legacy of Dead

Book of Dead Free Spins

These three classic games are fan favourites due to their simplicity and big win potential. Each of them can hit for a huge 5,000x in the bonus games. For example, land 3 scatters to get awarded 10 free spins, and a symbol will be chosen at random. When this symbol lands during the free spins, it expands to fill the entire reel. These symbols don’t respect the pay lines; all you need for a payout is 3+ reels filled with the chosen symbol if it is a common symbol or 2 reels filled with premium symbols. Book of Dead was the original in this trio and only allowed 1 expanding symbol. Read more about Book of Dead now, and get 10 free spins just for signing up to Leovegas below!

Whereas Rise of Merlin and Legacy of Dead allows you to re-trigger the bonuses and the chance to have every single symbol as an expanding symbol. This makes these 2 a fantastic choice as there isn’t anything more satisfying than completing the whole collection of symbols whilst winning a ton of free spins.

Where to Play these Games

Get up to:
£100 + 100 Extra Spins
Four Day Welcome Package
Terms and Conditions Apply. Offer valid upon 4 deposits. New players only. 18+. Min deposit £20. Welcome package split over 4 deposits, 35x wagering applies. See full terms here. #AD Begambleaware
No Deposit Required
Get 10 No-Wager Free Spins
Free Spins On Book Of Dead
Full T&Cs apply. New players only. No deposit needed. 3 days to claim & 3 day expiry. 10x free spins worth 10p on Book of Dead. 18+

Jammin’ Jars 2

Jammin' Jars 2 Giga Jar

Jammin’ Jars 2 is the popular successor to Jammin’ Jars from Push Gaming. Land 3 scatter jar symbols to unlock the free spins. Each jar gets its own multiplier that increases every time it is included in a win. Did we forget to mention that the jars are also wilds! This game sounds simplistic, and that’s because it is, making it a perfect game for someone new to the online gambling scene. These juicy little jars can hit for an absolute gigantic win of 50,000x! Read more about Jammin’ Jars 2 now.

Where to Play Jammin’ Jars 2

Get up to:
£50 + 25 Extra Spins
Extra Spins On Wild Toro
First Deposit Only. Min. deposit: £10, max. Bonus £50. Game: Wild Toro, Spin Value: £0.2. WR of 30x Deposit + Bonus amount and 60x Free Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the free spin winnings and bonus amount or £5 (lowest amount applies). Spins must be used and/or Bonus must be claimed before using deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy Applies. #AD Begambleaware

What Makes a Good Bonus Game?

What makes a good bonus game is subjective. For example, some players might like bonuses that have multipliers whilst others prefer loads of free spins. Ultimately, this comes down to what kind of games you like to play and what features you look for in a game. If you are unsure of what features are available in a bonus game, then stay tuned.

How Often do Bonus Games Appear?

Before you ask how often you can get the bonus game or free spins in an online slot, you need to understand how slots work. They are based on random number generators or RNG for short. These RNGs throw out truly random numbers that have outcomes attached to them. Each outcome could be a winning spin, a losing spin, a bonus activation or a variation depending on the slot game offers. Because slots outcomes are truly random, you could get two bonus games back-to-back. Similarly, you could go for hundreds of spins without getting a bonus.

Some casinos have a ‘Hot and Cold’ category for their slot games. This section shows you what games people are winning and losing on. So it could be that many people are currently hitting bonus rounds or getting big wins on these selected games. With that being said, it could be best to try these and see if you also have the same good luck.

Common Types of Online Slot Bonus Games

There are constantly new types of online slot games coming out. For one thing, slot providers are constantly trying to outdo one another to offer something totally unique to the gaming industry. Luckily, we have described the most common bonuses below.

Free Spins

Free spins, it does what it says on the tin. In short, you get free game rounds, and this is generally the foundation to a good bonus game. Together with features that enhance the free spins. For example, low-paying symbols may be removed, new symbols may be introduced, and wilds and multipliers may play a more significant part in the game.

Multiplier Free Spins

Multiplier free spins are most popular in BTG’s Megaways game series. Here you get free spins with added multipliers that increase after every cascading win. To point out, many Megaways games have unlimited multipliers equaling explosive wins!

Megaways Slots Bonus Games

Megaways are some of the hottest slot games right now. Megaway slots feature hundreds of thousands of ways to win (and this number is growing), and you will no doubt find them at the top of the list at every online casino. We have a complete guide to Megaways slots, as well as some of the fantastic games.

The showcase of Megaways games is the multiplier free spins type. The multipliers are unlimited, and keep going until you hit that max win on your chosen slot. Each Megaways game is different, and that’s what makes them so unique.

Chosen Symbol Slot Bonus Games

These bonus games are most commonly found in your classic online slots. On the whole, they each pick a symbol at random that will expand, filling the entire reel and leading to some big wins. Of course, there are variations of it, and by different game providers too. Sword of Khans takes things up a notch by including symbol multipliers. Land 3 scatters to unlock the bonus in these games, re-trigger, and most of the games will pick another symbol to expand!

Mystery Picker

Mystery pickers are bonuses that shuffle prizes, and you have to select some of them to see what you’ve won. These bonuses are similar to online scratchcards. As an illustration, In Gordon Ramsey Hell’s Kitchen slot, you will come across 15 menus that you need to choose from. Behind each menu, there are three types of prizes. For example:

  • Random cash prizes of 2, 3 or 5 x your total stake
  • 2x multiplier
  • 3x multiplier

You carry on picking until you uncover 3 ‘X’ symbols. The total win from this feature equals the sum of the prizes multiplied by the total multiplier unlocked. Unfortunately, these aren’t too popular these days, as the prizes can be pretty limited.

Wheel Bonuses

When we think of wheel bonuses, “Wheel of Fortune Megaways” springs to mind. This game has a large wheel that is the focal point to the base game, where you can activate wild stackers, free spins and expanding reels. In addition, some similar games have multiple wheels that spin and award you prizes, free spins, bonus features and more!

How do I Pick the Best Slots with Bonus Games?

Picking the best slots with bonus games can be tricky. This is especially true because there are thousands upon thousands of online slots for you to choose from. So this begs the question, how do you pick the best slots with bonus games? Start by looking at the following:

What Kind of Bonus does the Slot Have?

First of all, what kind of bonus are you looking for. The large majority of slots offer free spins bonuses with a twist, as previously mentioned. In addition, every slot has an information pack which will no doubt include its bonus game. In that case, it doesn’t hurt to load the game up and check what it offers.

What is the Max Potential of the Slot?

Secondly, the max potential should be high on your priority list. After all, you are playing slots to hopefully win a grand sum of money. Many online slots now offer potentials in the thousands. However, there are still some older slots on offer where the potential could be 100x or thereabouts. Again, we recommend you to read a slot review or look at the game information, so you don’t play a game that doesn’t have a chance of hitting it big. Comparatively, 5,000x is considered an average potential for slots nowadays. However, many go over 100,000x!

Can I Re-trigger the Bonus?

Re-triggering bonuses is a big one to look out for. Many games, such as Book of Dead, offer you the chance to gain more free spins in the bonus. For example, with Book of Dead, 3 scatters gets you 10 spins, land another 3 scatters, and you get 10 more free spins. This is always a welcome feature, as who wouldn’t want more free spins?

Similarly, you have a great collection of slot games out there that offer unlimited free spins. For example, check out Madame Destiny 2 by Pragmatic Play.

What are Slot Base Games?

When we mention slot base games or main games, we refer to regular spins on the game. When you first load a slot up and hit spin, that is a spin in the slots base game. Typically the aim of the slot is to enter the bonus game, which is done by landing special symbols on the board when playing the base game.

Are Bonus Games better than Regular Slots?

With most slot games, the big wins come from the bonus games, where most of the features are kept. So in that sense, bonus games are better than regular slots. However, more and more online slots do have the ability to pay out their max potential in their base game. In addition, some slots have added random features to keep you entertained when playing the base game.

How do I Trigger Bonus Features?

Triggering a bonus differs depending on the slot you are playing. Typically, you need to land a certain amount of scatters/bonus symbols to activate the bonus. On the other hand, you may need to get a certain number of consecutive wins in other slots to activate the bonus.

Can You Buy the Bonus Features?

For our UK players, you can no longer buy the bonus on any games. There are, however, some games that are basically the bonus, just re-skinned. So, you have Money Train 2, which is the original slot where UK players cannot buy the bonus game. A way around this is to try the new game, Money Cart 2, which is Money Train 2’s bonus game in a standalone version.

Elsewhere, like in Europe and the US, you can still buy the bonus. If your country allows you to buy bonuses, it will be available in the slot itself.

How do Bonus Buy Slots Work?

First of all, you would buy the bonus. Buying the bonus usually costs around 100x your bet. After buying the bonus, you then enter the bonus game or free spins mode. No base gameplay is required at all. Some players prefer to play like this rather than grinding out slots base games.

Slot Bonus Games to Avoid

Some bonus games, like the mystery picker games, have low potential and are old school now. These may not be worth your while as the outcome is most likely a low win. But, again, if you like playing mystery picker type bonus games, carry on. For everyone else, check out the slots information page before committing to playing.

Responsible Gambling

It’s always best to make sure you are sticking to your budget and not overreaching financially trying to chase bonus games. At the end of the day, slots are totally random, and they can take away your whole balance quickly if you let them. However, the online casinos have handy responsible gambling features you can use to help you gamble responsibly. Visit begambleaware or speak to your casino for more assistance.

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