What’s in the Vault™ Slot

3.4/5
Based on our expert’s review. Reviewed by
Games Global Slots
Review by
Jovana Bicanin
Updated: 05/05/2025
Review by
Jovana Bicanin
Updated: 05/05/2025

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.

Max Win
5,000x
Play
T&Cs Apply

New UK certified players | Valid mobile number required, No minimum deposit | 25 Book of Dead spins allocated | 40 times wagering on winnings | Ends 30.06.25 | £5 max bonus stake T&Cs apply #ad

Provider
Just For The Win/Games Global
Type of Slot
Video Slot
Theme
Bank
Reels
5
Paylines
1,024
Stakes Range
20p–£50
Bonus Features
5
Free Spins
8
Multiplier
1x–5x
Max Win
5,000x
RTP
96%
Volatility
High

What’s in the Vault™ Demo

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T&Cs Apply New UK certified players | Valid mobile number required, No minimum deposit | 25 Book of Dead spins allocated | 40 times wagering on winnings | Ends 30.06.25 | £5 max bonus stake T&Cs apply #ad
18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply New UK certified players | Valid mobile number required, No minimum deposit | 25 Book of Dead spins allocated | 40 times wagering on winnings | Ends 30.06.25 | £5 max bonus stake T&Cs apply #ad

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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

Whats-In-The-Vault-slot-base-game

“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-symbol10 3, 4 or 5 = 0.2, 0.4 or 0.6x the stake
Whats-In-The-Vault-slot-j-symbolJ 3, 4 or 5 = 0.2, 0.4 or 0.6x the stake
Whats-In-The-Vault-slot-q-symbolQ 3, 4 or 5 = 0.2, 0.4 or 0.6x the stake
Whats-In-The-Vault-slot-k-symbolK 3, 4 or 5 = 0.2, 0.4 or 0.6x the stake
Whats-In-The-Vault-slot-a-symbolA 3, 4 or 5 = 0.2, 0.4 or 0.6x the stake
Whats-In-The-Vault-slot-coins-symbolCoins 3, 4 or 5 = 0.4, 0.6 or 1x the stake
Whats-In-The-Vault-slot-bank-notes-symbolBanknotes 3, 4 or 5 = 0.4, 0.6 or 1x the stake
Whats-In-The-Vault-slot-gold-bars-symbolGold Bars 3, 4 or 5 = 0.6, 1 or 1.6x the stake
Whats-In-The-Vault-slot-gem-pouch-symbolPouch of Gems 3, 4 or 5 = 0.6, 1 or 1.6x the stake
Whats-In-The-Vault-slot-diamond-symbolDiamond 3, 4 or 5 = 1, 2 or 4x the stake
Whats-In-The-Vault-slot-wild-symbolWild Substitutes for symbols above
Whats-In-The-Vault-slot-scatter-symbolScatter 3 = 8 free spins
Whats-In-The-Vault-slot-mystery-symbolQuestion Mark Mystery symbol

What’s in the Vault™ Mobile Slot

Whats-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:

  • Mini = 10x
  • Minor = 25x
  • Major = 100x
  • Mega = 5,000x

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

Whats-In-The-Vault-slot-free-spins

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
Based on our expert’s review. Reviewed by
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
  • Free spins with multipliers
  • Transforming Mystery symbols
  • Four jackpot prizes
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.