Special Symbols And Features
Wild Symbol
WILDS substitute for all paying symbols.
Cash Symbols
Cash symbols hold a monetary prize representing a stake MULTIPLIER. Their possible values are: 0.5x, 1x, 2x, 3x, 5x, 7x, 10x.
The Bonus Prizes are inactive and Cash symbols holding such values cannot land during the first 4 levels of the progress. Bonus Prize symbols may land only after completing level 4 of the progression. Their prizes are as follows:
MINI – 20x
MINOR – 100x
MAJOR – 1000x
GRAND – 20,000x
It is not possible to win more than 1 GRAND prize, or to collect a GRAND symbol more than once in a spin and a FREE SPINS feature.
Free Spins
6 or more Cash and/or Bonus Prize symbols in a spin trigger 3 FREE SPINS. Only Cash, Bonus Prize or empty symbols can land during the feature. Cash and Bonus Prize symbols are held for the duration of the bonus round. Any new Cash or Bonus Prize symbols that land reset the number of the remaining spins to 3.
The FREE SPINS feature continues until 3 spins without new Cash or Bonus Prize symbols, or until all positions on the grid are full. At the end of the feature, the sum of all Cash symbols’ values on the reels, including the Bonus Prizes, are paid out.
Progression
There are 5 progress levels in the game. The progress level is incremented after each Free Spins round, up to level 5.
A new feature is added to the game at the start of each new level as follows:
Level 2 – Cash Box symbol is added.
Level 3 – Cash Safe symbol is added.
Level 4 – Cash Vault Symbol is added.
Level 5 – Bonus Prizes are added.
Cash Box
Cash Box may land on reels 2, 3 and 4 in level 2 and higher.
Cash Box collects the values of all Cash symbols on the reels, including Bonus Prizes, leaving the Cash and Bonus Prize symbols intact. If the Cash and Bonus Prize symbols are 6 or more, they will trigger a FREE SPINS bonus and keep their values for the feature.
When there is more than 1 Cash Box symbol in a spin, each of them collects all Cash and Bonus Prize values.
Cash Safe
Cash Safe may land on reel 3 in level 3 and higher.
After the line wins, Cash Safe turns all Royal symbols on the reels into Cash or Bonus Prize symbols at random, and collects the values of all Cash and Bonus Prize symbols, leaving them intact. If the Cash and Bonus Prize symbols are 6 or more, they will trigger a FREE SPINS bonus and keep their values for the feature.
If there are Cash Safe and Cash Box symbols in the same spin, Cash Box symbols collect the Cash and Bonus Prize symbols’ values after the Cash Safe has turned Royal symbols into Cash or Bonus Prize symbols.
Cash Vault
Cash Vault may land on reel 3 in level 4 and higher. It is not possible to land Cash Safe and Cash Vault symbols in the same spin.
Cash Vault turns all Royal symbols on the reels to Cash or Bonus Prize symbols at random and collects the value of all Cash and Bonus Prize symbols on the screen, leaving them intact. Cash Vault triggers the VAULT SPINS feature with increasing MULTIPLIER.
At the start of the VAULT SPINS feature the MULTIPLIER is set to the number of the Cash symbols present on the reels. The Bonus Prize symbols do not influence it. When a new Cash symbol lands, it is multiplied by the current MULTIPLIER. At the end of the spin the MULTIPLIER is increased by 1 (for the next spins) for each new Cash symbol that landed in that spin. The Bonus prizes are not multiplied and do not increase the MULTIPLIER. Cash and Bonus Prize symbols are held for the duration of the bonus round. Any new Cash or Bonus Prize symbols that land reset the number of the remaining spins to 3. The VAULT SPINS feature continues until 3 spins without new Cash or Bonus Prize symbols, or until all positions on the grid are full.
If there are Cash Vault and Cash Box symbols in the same spin, the Cash Box symbols collect the Cash and Bonus Prize symbols’ values after the Cash Vault has turned Royal symbols into Cash and Bonus Prize symbols.
How To Play Biggest Vault
Game Progress
Any progress features in the game, including symbols locked onto the reels which affect subsequent spins, are saved for your game at the stake level you are playing at.
You can have different progress levels at different stakes on the same game, and move between them by changing the stake.
If you are awarded free spins from a promotional campaign any progress in the main game including any locked symbols, will be saved and be available to continue playing at the same stake once the free spins have been completed.
Please note that this stateful game saves its state forever.
Total Stake
The Total Stake is the total of stakes per line. You can adjust it at any time, using the + or – buttons.
Spin The Reels
If you are playing on desktop, click the Spin button or press the spacebar to spin.
Additional Information
Malfunction voids all pays and plays.
The RTP is shown in-game.
The calculated max potential multiplier of the game is 21026.5.
Minimum stake: £0.10
Maximum stake: £5.00
Biggest Vault Demo Mode & Free Play Guide
When players explore a new slot, many look for a Biggest Vault demo mode or Biggest Vault free play feature to understand the basics. While no demo version is offered directly here, this page acts as a reliable alternative. We’ve gathered the key details from the slot itself so that you can gain the same insight you would from free play, but in a clear, easy-to-read format.
