Big Bang Boom

Big Bang Boom is a high-volatility video slot developed by NetEnt, released on September 20, 2023. The game features a unique expanding grid mechanic that starts with a 4×4 layout and can grow up to 8×10 during the bonus round, offering between 256 and 10,000 ways to win.

The slot's theme revolves around graffiti and neon explosions, set against a brick wall backdrop. The game introduces seven types of bomb symbols: Vertical, Horizontal, Diagonal, Plus-Pattern, Omni-Directional, Cluster, and Persistent (available only in free spins). These bombs play a crucial role in expanding the grid and triggering features.

Big Bang Boom's main features include the Avalanche mechanic, where winning symbols are removed and replaced by new ones, potentially creating consecutive wins. The Expanding Reels feature allows the grid to grow vertically in the base game and both vertically and horizontally in the free spins round.

The Free Spins feature is triggered when the base game grid expands to its maximum size of 4×10. Players receive 6 free spins, during which only prize symbols, bombs, and blanks appear on the reels. Prize symbols remain locked for the duration of the bonus, and their values can be doubled by bomb explosions up to a maximum of 2,048x.

The game also includes a Treasure Prize feature, where uncovering new positions can reveal additional bombs, larger cash prizes, or extra free spins. For players in eligible jurisdictions, a Bonus Buy option is available, allowing direct access to the free spins round.

Big Bang Boom offers a maximum win potential of 4,300x the stake and comes with multiple RTP options, the highest being 96.07%. This slot is available for demo play on this page, allowing players to experience its unique features risk-free before wagering real money.