Boo

Boo Slot Review

Slot Provider: Big Time Gaming

RTP: 96.54% | Variance: High | Maximum Win: 47,050x

Our Score: 7.8

Play at Casumo Casino
QUICK LINKS: Game Information | Where To Play | Full Review | Testing Notes | Tips For Players | About The Developer

WHY YOU CAN TRUST THIS REVIEW: The information and opinions on this page are the result of an comprehensive process of information gathering and live game testing by the gambling experts who work at allslotsites.com. Find out more here.

About Boo

Reviewed by:

Published Date: 12th September 2024

How We Review Slot Games

We test and rate all slot games across 5 criteria, assigning a score out of 10 for each and an overall score that is an average of the 5. To build an accurate assessment of each game we gather information from the supplier and play in real play or demo mode. Find out more.

Boo by Big Time Gaming is a Halloween win ways slot with 4 reels and 4 rows. Wild symbols carry multipliers of up to 4x and reactions follow every win, bringing more premium and wild symbols into play each time. The highlight is the free spins round where EVERY position on the grid carries a persistent multiplier and each winning spin adds value to them at random. A lucky run could grow those multipliers to high numbers and take you close to a 47,050x max win. Spins start at 10p.

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Boo Game Information

  • Release Date: 24.09.24
  • RTP: 96.54% | 94%
  • Variance: High
  • Maximum Win: 47,050x
  • Progressive Jackpot: No
  • Reels: 4
  • Rows: 4
  • Paylines: 256
  • Minimum Stake: £0.10
  • Theme: Halloween
  • Features: Cascading WinsFree SpinsMultipliersWilds
  • Format: Win Ways

Testing Notes: Here’s What Happened When We Played Boo

IMPORTANT: To give you an accurate assessment of the games we review our writers play 200 spins. Whilst this is a useful tool to help us review games and to give an example of what might happen when you play, keep in mind that 200 spins is only a very small sample and cannot be used to accurately predict what might happen over another 200 spins. The outcome of all slots play is always random.

Boom Or Bust? Our Session By The Numbers

Test spins and results analysis by Mark Wadie.

Results from 100 spins on Boo on Big Time Gaming’s test servers.

  • Stake Size: 1
  • Start balance: 1,000
  • End balance: 992
  • Hit Rate: 26% (26 winning spins in 100)
  • Biggest Win: 8.2x
  • Free Spins Round: 0

This is a fun, fast-paced game. It gave me a win rate of 26%, or 26 winning spins in 100, which isn’t bad at all for a volatile slot. It was quite streaky as expected, but it rarely stood still for long. It’s quite hard to pick up any decent sized wins in the base game because pay symbol values are so low (max of 2x from 4 premiums). However, keep in mind that after each reaction, ONLY premium ghosts can fill the empty spaces vacated by winning symbols, so if you can string a run of 3 or 4 reactions together, you can start to fill up the grid entirely with ghosts. I only got to an 8.2x, but I could see potential to get much more, even on a base game spin.

An 8.2x win on Boo
An 8.2x win with multipliers wilds

There were a few glitches in the gameplay – this was in test before the game goes live in late September 2024 – so I quit after 100 spins. Otherwise I would have kept going to see how the free spins round looks. But I’ll definitely be chasing those when Boo appears in casinos.

Now keep reading our review to find out more about the game.

What We Liked

  • Amazing free spins round with lots and lots of multipliers
  • Fun production with spooky ghosts
  • Wilds come with multipliers of up to 4x
  • Only premiums and wilds fill spaces left by reactions
  • Huge top win of 47, 050x

What We Didn't like

  • Low symbol values in paytable
  • Tough to unlock that free spins round

Boo Review Scores

  • Theme and Design 7
  • RTP and Variance 8
  • Maximum Win 9
  • Symbols and Paytable 8
  • Features and Gameplay 7

What Our Reviewer Says ...

"A typically light-hearted approach to halloween from BTG, but still volatile as hell and stacked to the rafters with powerful multipliers!"

Overall Score: 7.8

Theme & Design

Our Score 7

Ever wished that Big Time Gaming’s popular Pop slot could be  just a little spookier? Well you’re in luck. Boo has taken that one and given it a ghastly makeover. It is set in a haunted graveyard, shrouded in grey mist and filled with creaking trees and dimly lit by a creepy mansion. It’s classic Frankenstein-style spooky, one that will appeal to the old school horror fans.

Boo by Big Time Gaming
Boo Game Screen

The symbols are now slightly menacing little ghosts, in different colours, and a couple of pumpkins flank the reels to each side. It’s not the most unique theme, but it’s nicely done and perfect for a spooky-season revamp of a popular slot.

RTP and Variance

Our Score 8

What is RTP?

RTP (Return to Player) refers to the amount a game will pay out in cash prizes expressed as a percentage of all the money wagered on that game. For example, a 96% RTP means a game will pay out £96 for every £100 wagered. This is an average number and will vary from one session to the next.  Read more here.

What is Variance?

Variance refers to how far a game will deviate from its RTP over time. High variance games deviate a lot and produce uneven win distributions and unexpected windfalls. Low variance games provide a more stable and even distribution of wins. Read more here.

Boo has a default RTP of 96.54% which is very good. However, there is also an alternative RTP of 94% and some slot sites will choose to run the game at that level. You can check for yourself which setting you are playing at by browsing the game rules pages via the little hamburger icon next to the reels.

A good option to play this game is MrQ from Lindar Media. They always run slots at the optimum RTP rate.

No question this is a very volatile game from a slot provider renowned for pushing the variance to the limits. So, expect an uneven win distribution and the chance of some extended dry runs. And if you’re looking for a spooky game with a slightly friendlier volatility then try out Fear the Dark by Hacksaw Gaming. It boasts a similar RTP but only medium volatility.

Maximum Win

Our Score 9

What Is Maximum Win?

Maximum win refers to the maximum amount a player can win from one spin. It is expressed as a multiple of the stake. For example, where the maximum win is 100,000x, from a £1 stake, the maximum win would be £100,000.  

The top payout in Boo is a whopping 47,050x. BTG have produced games with bigger potential but it’s still a very good max win and a suitable top prize for a game as volatile as this one. Interesting to note though that Pop, which shares many similarities, has higher top payout of 66.960x.

Symbols and Paytable

Our Score 8

This is a win ways game, played on 4 reels and 4 rows. That means wins are formed by landing 3 or more matching symbols on adjacent reels (regardless of their row position) from left to right, starting from the leftmost reel.

That gives you 256 win ways per spin (4x4x4x4).

Boo Paytable
The paytable with up to 2x for 4 ghosts

Symbols are not great. However, there are plenty of win ways, plus a whole array of powerful multipliers to help boost those payouts as we shall see.

The paytable includes 10 symbols in total, plus a wild and a scatter. The low-value symbols are 9, 10, J, Q, K, and A. Landing 4 of these symbols on adjacent reels pays out between 0.2x and 0.4x the bet. The premium symbols feature a variety of ghosts in green, blue, red, and purple. For these, landing 4 on adjacent reels pays between 0.8x and 2x the bet.

The game’s Wild Symbol, a multi-colored ghost, appears only on reels 2, 3, and 4 and can include multiplier values of up to 4x. The Scatter Symbol, represented by a scary pumpkin, triggers the Bonus Game when 3 or more land across the reels.

Features and Gameplay

Our Score 7

Boo has pretty simply gameplay with just multipliers wilds in the base game. However, a multiplier-fest in the free spins round has the potential to really crank up the payouts. 

Reactions / Cascades After Each Win

Many studios call them cascades. BTG choose to call them reactions.

Whatever, it’s the same deal. After every win, winning symbols are removed from the grid. Remaining symbols drop down to fill any spaces, before new ones drop in from above to complete the grid. In a nice twist, the new ones that drop in will always be ghosts, wilds or scatters (not low value symbols). 

If they create more winning combinations then the reactions keeps happening until no new wins are made. 

Wilds With Up To 4x Multipliers

The wild is shown as a multi-colored ghost. He can substitute for any symbol except the scatter to help you to complete win ways.

Wilds can only appear on reels 2, 3, and 4 but they MAY land with a multiplier of up to 4x to be applied to any win they are part of.

Wild Symbols in Boo
Wild symbols with 2x and 3x

Free Spins With Persistent, Progressive Multipliers

That’s the base game. Simple, but things heat up considerably in the free spins round. This is triggered by landing 3 or more scatters (the halloween pumpkin). That gets you 12 spins.

The fun part is, now EVERY position on the grid has its own multiplier which persists throughout the round. And every time a winning combination that features a premium or a wild symbol is made (only on spins, not reactions) one or more of the winning positions will have their multiplier increased by 1, 2 or 3. 

NOTE: The positions on the grid where triggering scatters landed for the free spins round start with multipliers of 2x, 3x or 4x rather than 1x.

These multipliers are applied ONLY to the ghost symbols or the wilds in any win.

Finally, by landing 3 more scatters during the round you extend the round by 3 spins and increase the multiplier on each scatter position by 1x, 2x or 3x.

The Final Verdict

Hitting recycle on a popular game might sound like an easy way out, but Big Time Gaming has done a great job of this one, taking Pop and turning it into Boo, with just the right blend of spooky and cutesy! But don’t let that light-hearted side fool you, this is a wickedly powerful slot game. BTG have thrown everything into reactions and multipliers, two of their favourite tools, and the result is a game that can produce sudden bursts of high value wins out of nowhere. As ever the best stuff will happen in free spins and it’s not hard to imagine a run of consecutive wins and reactions turning small multipliers into much bigger ones for a huge windfall.

Useful Tips When Playing Boo

Remember, online slots are games of chance, there is NO strategy that can improve your odds of winning. However, reading our review and following these tips will help you get the most out of your time playing this slot game.

1. Fill The Screen With Ghosts

The best base game wins come from as many consecutive reactions as you can make. After each, ghosts fill empty spaces. More ghosts means more chance of bigger wins.

2. Set A Sensible Stake Level

Choose a low stake relative to your balance. This is a highly volatile slot and it can burn down your balance fast.

3. Look For Halloween Pumpkin Scatters

The free spins round has a crazy amount of multipliers and the chance to land seriously big wins. So keep your eyes out for 3 or more pumpkins to trigger the feature.

 

4. Play At Our Recommended Slot Sites

We have chosen the sites on this page because they all scored high in our reviews and they are licensed by the UK Gambling Commission. That makes them fair and safe places to play slots.

Who Made Boo?

  • Name: Big Time Gaming
  • Established: 2011
  • UK License: 38696
  • Total Games: 55 +
  • Known For: Inventing Megaways, super volatile slots, high max payout slots, rock n roll soundtracks
  • Popular Slots: Bonanza Megaways, Max Megaways, Outlaw, Danger! High Voltage
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Max Win: 5,000x

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Variance: | RTP: 96.04%

Max Win: 2,100x

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Pop

Variance: High | RTP: 96.54%

Max Win: 66,960x

Our Score 8.8

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