Logo image for Whats in the vault Image

What’s in the Vault™ Slot

3.4 / 5
Author: Jovana Bicanin
5 min read clock
Logo image for Casumo

100% Deposit Bonus up to £100 + 50 Bonus Spins on Big Bass Bonanza

Play Now
T&C Apply 18+. New customers only. 100% Deposit Bonus up to £100 on the first deposit. 30x wagering on Deposit and Bonus (game weighting applies) + 50 Bonus Spins (Big Bass Bonanza) of £0.10. Min. deposit £20. Play responsibly • T&Cs apply. #ad BeGambleAware.org
Breaking the bank and landing a top prize of 5,000x is the goal in What’s in the Vault™, a 1,024-ways-to-win video slot from Just For The Win that’s released on 14 May 2025. The best opportunities to bust this treasury come from Mystery symbols, free spins with multipliers and a collection of static jackpot prizes. Is this a bank heist that’s worth trying? Find out in my detailed What’s in the Vault™ review.
Provider

Provider

Just for the Win
Type of Slot

Type of Slot

Newspapers
Theme

Theme

Bank
Reels

Reels

5
Paylines

Paylines

1,024
Stakes Range

Stakes Range

0.2 – 50
Bonus Features

Bonus Features

5
Free Spins

Free Spins

8
Multiplier

Multiplier

1x–5x
Max Win

Max Win

5,000x
RTP

RTP

96%
Volatility

Volatility

High
View All

What’s in the Vault™ Demo

You are playing What’s in the Vault? for FUN Logo image for Whats in the vault
Play Icon

Recommended Casino

Casumo Casino Review our recommendation
100% Deposit Bonus up to £100 + 50 Bonus Spins on Big Bass Bonanza
Play Now
18+. New customers only. 100% Deposit Bonus up to £100 on the first deposit. 30x wagering on Deposit and Bonus (game weighting applies) + 50 Bonus Spins (Big Bass Bonanza) of £0.10. Min. deposit £20. Play responsibly • T&Cs apply. #ad BeGambleAware.org

Best Casinos to Play in the UK

Jackpot Casino Review
70 No Wager Free Spins on Bigger Bass Bonanza
Play Now
T&C Apply These Special Promotional Terms shall apply to the Free Spins granted through the Promotion: Play with £15 and receive 70 Free Spins for Bigger Bass Bonanzas. This Free Spin offer is exclusively available for new Players The Free Spin shall be made available upon a minimum deposit of £15 or more which needs to be spent in any of the Qualifying Games through one or multiple bets. The minimum deposit amount needs to be made in one unique transaction/deposit and not cumulative deposits. The minimum deposit must be spent and/or bet on any of the Qualifying Games within 48 hours of the first minimum deposit being credited to the Players account. The Qualifying Games are any of the Slots and Instant Win Games offered by Jackpot.com. The Free Spins will be available to claim, upon spending the minimum £15 deposits on any of the Qualifying Games, for 7 calendar days as of the day when they were credited to the Players account under My Account > My Promotions Section. The Free Spins can only be used on Bigger Bass Bonanza. The maximum winnings that can be withdrawn from the Free Spins are £100. Any terms not specified in these Special Promotional Terms, the Promotional Terms shall apply and will be subject to Jackpot.com Terms and Conditions.#ad
888casino Casino Review
100% Bonus up to £200
Play Now
T&C Apply #AD | 18+. For new 888casino UK/Ireland customers. Min £10 first deposit (NETELLER/Skrill excluded). 100% bonus equal to the deposit, up to £200. Must claim bonus via email/pop-up/My Account within 48 hours. 40x wagering req applies and must be met within 90 days on selected games. Play Responsibly. National Gambling Helpline: 0808 8020 133. GamCare.
NetBet Casino Review
Get 100 Free Spins when You Bet £20
Play Now
T&C Apply #AD New customers only. £10 min deposit. Opt-in and Bet £20+ on any slot, 100 Free Spins on Big Bass Splash, £0.10 per spin. Winnings paid as cash, £100 Max win. Additional T&Cs apply.
Spinyoo Casino Review
100% Deposit Bonus of up to £250 + 100 Spins
Play Now
T&C Apply 18+. New players only. Min Dep £20. Max Bonus Bet £5. Offer: 100% Bonus of 1st deposit up to £250 on Slots + 100 Yoo Spins on Starburst, Book of Dead, Fire Joker, Gonzo’s Quest, and Big Bass Bonanza, respectively (first 20 credited immediately upon first deposit, rest credited at 07:00 GMT at 20/day). Spins expire after 23:59 GMT on the day you’re credited. Winnings from each 20 spins capped at £50 & credited as bonus. Bonus funds expire after 30 days, are separate to Cash funds & subject to 35x wagering of bonus + deposit amounts. Only your bonus funds contribute to wagering requirements. Affordability checks apply.. Full Terms Apply. GambleAware.org #ad

What’s in the Vault™ Slot RTP, Details & Wager Limits

The action in the What’s in the Vault™ slot game plays out on a 5-reel, 4-row, 1,024-ways-to-win machine. Create winners by landing 3, 4, or 5 of the same symbol on adjacent reels, starting from the leftmost reel.

This bank isn’t just for the high rollers. Stakes range from 20p to £50 per spin. Click the coins icon above the spin button to adjust your bet size. Turbo spin and autoplay modes are available if you’re in territories where they’re allowed—that doesn’t include UK online casinos.

The What’s in the Vault™ RTP is 96%, and the volatility is high. That’s about average when compared to many new slots. Keep in mind, though, that the game comes with RTP variations of 94%, 92.2%, and 86.7%, so choose your casino wisely.

You might expect a slot based on banking and loads of loot to offer potentially massive paydays. The What’s in the Vault™ max win of 5,000x is respectable but not special, especially when compared to the biggest progressive jackpot slots.

That big prize is on offer courtesy of the Mystery Symbols Jackpot. I also found some decent action in the Free Spins feature when testing the What’s in the Vault™ demo slot, especially if you manage to carry over a decent win multiplier. This is one of thousands of free casino slots to try at online-slot.co.uk.

What’s in the Vault™ Theme—A Treasury Filled with Notes and Gold

“Money doesn’t grow on trees”, so the saying goes. It does in the What’s in the Vault™ slot. The vault here is overflowing with bundles of cash, gold coins and even a tree whose leaves are made of banknotes.

The reels are edged in gold. Joining the lower-value royals are a collection of wealth-related symbols, including piles of gold coins, banknotes, gold bars, a pouch full of gems, and a shimmering diamond. There’s also a Wild plus a Mystery symbol.

It’s all glitzy, which is no surprise given the theme. The soundtrack has a hint of jazz and could come from a cheesy TV game show. Playing at What’s in the Vault™ casinos is quite the spectacle.

It’s all a bit flashy, but I like what Just for the Win and Games Global have done here. It stands up well compared to many online slot games.

Here’s what the paytable delivers:

Symbol(s)Payouts
Whats In The Vault slot 10 symbol 103, 4 or 5 = 0.2, 0.4 or 0.6x the stake
Whats In The Vault slot j symbol J3, 4 or 5 = 0.2, 0.4 or 0.6x the stake
Whats In The Vault slot q symbol Q3, 4 or 5 = 0.2, 0.4 or 0.6x the stake
Whats In The Vault slot k symbol K3, 4 or 5 = 0.2, 0.4 or 0.6x the stake
Whats In The Vault slot a symbol A3, 4 or 5 = 0.2, 0.4 or 0.6x the stake
Whats In The Vault slot coins symbol Coins3, 4 or 5 = 0.4, 0.6 or 1x the stake
Whats In The Vault slot bank notes symbol Banknotes3, 4 or 5 = 0.4, 0.6 or 1x the stake
Whats In The Vault slot gold bars symbol Gold Bars3, 4 or 5 = 0.6, 1 or 1.6x the stake
Whats In The Vault slot gem pouch symbol Pouch of Gems3, 4 or 5 = 0.6, 1 or 1.6x the stake
Whats In The Vault slot diamond symbol Diamond3, 4 or 5 = 1, 2 or 4x the stake
Whats In The Vault slot wild symbol WildSubstitutes for symbols above
Whats In The Vault slot scatter symbol Scatter3 = 8 free spins
Whats In The Vault slot mystery symbol Question MarkMystery symbol

What’s in the Vault™ Mobile Slot

You can play What’s in the Vault™ mobile slot at many mobile casinos. The flashy design works nicely on smaller-screen tablets and smartphones. Combine that with the straightforward gameplay, and it’s a very playable game in both landscape and portrait modes.

What’s in the Vault™ Bonus Features

The best slots usually offer variety. This bank offers customers a very decent selection of bonuses. Look out for Mystery symbols, which can transform into standard symbols, cash coins, or jackpots. There’s also a free spins bonus with sticky Mystery symbols and multipliers.

Mystery Symbols

The question mark is the Mystery symbol. All Mystery symbols that appear on the same spin transform into the matching symbol. If they transform into the gold Dollar sign symbols, you’ll trigger the Money in the Bank Feature.

Money in the Bank Feature

When triggered, all the symbols transform into Money or Jackpot Symbols rather than standard symbols. Each Money symbol is worth 0.4, 0.6, 0.8, 1, 2, 3, 4, or 5x. You could also land one of 4 fixed jackpots:

The other symbol you can see during this feature is the +1. This gives another spin.
The value of all the Money symbols is then added to give you an overall prize.

Free Spins with Multiplier

Landing 2 Free Spins symbols on the same base game spin adds to the meter above the reels. Once the meter is full, a win multiplier increases by 0.5x, up to a maximum of 5x. This win multiplier is activated when you trigger the Free Spins feature.

To do that, land the Free Spins Scatter symbol on reels 1, 3, and 5 on the same spin. Your reward is 8 free spins with the active multiplier from the meter.

Boosting your winning chances are sticky Mystery symbols. Each one that lands during the Free Spins locks in position for the rest of the round. Each +1 symbol that hits adds one more free spin to your total.

When the free spins round is complete, the multiplier resets to 1x in the base game, and the meters return to zero.

What’s in the Vault™ Verdict—You Might Not Break the Bank, but it’s Well Worth Trying to Crack This Vault

3.4/5
What’s in the Vault™ Slot
If you like slots that deliver simple but highly entertaining features, you’ll find exactly that in What’s in the Vault™. The gameplay isn’t varied, but the Mystery symbols, free spins and multipliers are a cracking combination.
Pros
Pros
Free spins with multipliers
Pros
Transforming Mystery symbols
Pros
Four jackpot prizes
Cons
Cons
Max win isn’t huge

I enjoyed What’s in the Vault™. The range of features might not be as wide as some slots, but the Mystery symbols certainly rev up the base game. As does the multiplier meter. Build a decent figure here, and the Free Spins feature can be well worth landing.

I didn’t have to wait ages to land a feature either, which keeps the pace high. The glossy design is stylishly done, and the stats are solid.

Put that package together, and this bank heist is well worth closer investigation.

For a more anarchic take on the bank heist theme, check out Cops ‘n’ Robbers Megaways from Inspired Gaming. This cartoon capper has some top features, including an around-the-board chase bonus plus free spins with expanding multipliers. Looking for a bigger max win? Try Relax Gaming’s Chip Spin and shoot for 25,000x your bet.

Finally, we highly recommend playing Vegas Vault by Push Gaming.

Jovana Bicanin
Jovana Bicanin

166 Articles

Jovana takes the guesswork out of online slots with honest, easy-to-read reviews. By simplifying complex features, she helps everyone from total beginners to high rollers discover their next favourite game through insights they can actually trust.

More info on Jovana Bicanin arrow