Biggest Vault

Biggest Vault by Red Tiger is a modern video slot on a 5-reel, 4-row grid, featuring 50 fixed paylines. The theme evokes luxury, vaults, and buried fortunes: players truly feel as if they are entering a grand bank vault filled with jewels, gold bars, and shiny treasures. The game incorporates a five-level progression system: each successful Free Spins round advances you to the next level, unlocking new features at each stage. At level 2, the Cash Box symbol appears, collecting the visible values of Cash and Bonus Prizes symbols without removing them. At level 3, Cash Safe is unlocked: this symbol transforms all royal symbols into Cash or Bonus Prizes symbols before collecting all values present on the screen. At level 4, the Cash Vault replaces the Safe: it triggers Vault Spins, an extension of the Free Spins mode with an increasing multiplier. At level 5, Bonus Prizes appear with the titles Mini, Minor, Major, and Grand, with the Grand having the highest value. The Free Spins mode is a Hold & Spin: when at least six Cash or Bonus Prizes symbols appear, three free spins are awarded, and each new symbol resets this counter to three. The spins continue as long as new symbols drop or the entire grid is filled. The game also offers a Feature Buy option, allowing players to directly purchase certain features like Cash Collect, Free Spins, or Cash Vault depending on the bet amount. The Wild symbol is present and substitutes for other regular symbols, sometimes bringing wins on its own. The maximum bet allows for a potential payout of over twenty thousand times the stake, primarily by advancing through the levels and activating the Vault Spins.

You can play it for real money.