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Game Rules

This 3 x 5, 20 line game will have you safe cracking in no time. Play the ‘Big Bank Bonus’ to match 3 jewels of the same kind to win up to x500 stake.

Base Game

  • WILD is substituted for all symbols except VAULT symbol.
  • Only highest winner paid per winning combination.
  • All line pays are already multiplied by the STAKE/LINE.
  • Line wins must occur on adjacent reels, beginning with the leftmost reel.
  • VAULT symbol scattered across reels 1 through 5.

Bonus Description

  • Scattered vault symbol across 5 reels will initiate the free spins bonus.
  • The player will be prompted to 'Select to open' a vault door. Upon selection the player is awarded 5, 10, 15, 20, or 25 free spins, with the chance of selecting the Big Bank Bonus.
  • The player is then given the chance to gamble or collect their free spins with the chance to increase the amount of free spins or lose them all.
  • During the Free Spins bonus there are 3 double symbols added to the first reel. These are double X, double bar and double 7. These will double the players line win if matched with the corresponding consecutive singular symbol on reels 2, 3, 4 and 5.
  • During the free spins execution, the 'O' symbols continue to change to 'Vault' symbols on a chance basis.
  • If 5 further 'Vault' symbols are achieved then the free spins are re-triggered and the player is prompted to pick a 'Vault' symbol.
  • The 5 Vault symbols will contain one of 5, 10, 15, 20 or 25 free spins.
  • 'Big Bank Bonus' is not triggered during Free Spin Bonus.
  • Any additional free spins awarded may NOT be gambled. Instead they will be added directly to the free spins remaining.

Big Bank Bonus

  • If the Free Spins bonus is activated the player has the chance of selecting the Big Bank Bonus during the vault selection.
  • Big Bank Bonus game the player must select vault doors until 3 of the same colour gems are selected (sapphire, Ruby or Diamond). This will determine the multiplier awarded to the player.
  • 3 x sapphires can award a multiplier of x25, x30, x40, x50, x60, x75, x100, x125, x150, x175, x200, x225 and x250.
  • 3 x diamonds can award a multiplier of x100, x125, x150, x175, x200, x225, x250, x275, x300, x350, x400, x450 and x500.
  • 3 x rubies can award a multiplier of x50, x75, x100, x125, x150, x175, x200, x225, x250, x275, x300, x325 and x375.


  • Wins on multiple paylines are added together.
  • Total line bet must be divided equally between each active payline; therefore, all total bet amounts are not available.
  • The total bet is the number of lines multiplied by the cash bet on each line.
  • Only active paylines can register wins.
  • Malfunction voids all pays and plays.

Classic Buttons

  • The 'HELP' button will display the game’s paytable.
  • Clicking on the '+' and '-' in the 'STAKE/LINE' window will increase or decrease the amount the player would like to wager on each payline.
  • The 'STAKE' window displays how much the player will wager if they happen to hit the 'SPIN' button at that particular moment. The 'STAKE' amount is made up of the number of lines displayed in the 'LINES' window multiplied by the amount displayed in 'STAKE/LINE' window.
  • Click the 'AUTO PLAY' button to spin the reels until a predetermined outcome set in the AutoPlay option menu is reached.
  • Click the 'SPIN' button to spin the reels.

Return to Player

Return to Player: 95.16%.

The expected return is the amount we pay out to players relative to the amount of wagering on the game.

For example, if we take £100 of wagers we will, on average, pay out £95.16 of wins.