Fire in the Hole xBomb — expanding mine and xBomb multipliers by Nolimit City

Fire in the Hole xBomb — the slot with no passive spins

Fire in the Hole xBomb is a Nolimit City slot game released in March 2021 and set in a mine full of dwarf miners and explosives.

Every spin results in at least one of the three actions taking place on the reels - a winning combination, an xBomb Wild explosion, or a Wild Mining feature trigger.

Slots enthusiasts comparing the Fire in the Hole slot to other VivatBet titles might want to also check out Carnival Queen.

Fire in the Hole xBomb — game details

With a 96.06% RTP and extreme volatility, Fire in the Hole xBomb favors rare but massive wins over frequent small ones. The 60,000× ceiling is reached in roughly 1 in 16,000 bonus rounds.

How the expanding grid works — Collapsing Mine

The grid starts at 6×3 and offers 64 ways to win. Every time the player lines up a winning combination, lands an xBomb explosion, or triggers Wild Mining, a new row from below is added to the grid. This results in the following number of ways to win within a single chain of cascading wins: 64 → 486 → 4,374 → 46,656.

The cascades do not reset the grid; it is only with a new spin of the reels that the grid returns to 6×3.

As with any cascade slots, such as Gates of Olympus 1000, some symbols will be replaced by others as the cascades play out in a particular game session.

xBomb Wild — what it does and when

The xBomb Wild substitutes for regular symbols. When it explodes, it destroys symbols above, below, and to the sides, and boosts the multiplier for the next cascade.

The xBomb can also explode even if the reels do not yield a winning combination. If there are three to five of the same symbols in a row on the reels, this is known as Wild Mining and can trigger the explosion of the xBomb.

Reactoonz is also another game that revolves around chain reactions.

Wild Mining — horizontal match that does not pay

When three, four, or five of the same symbols appear in a row on the reels, but do not pay out for the player, this is known as Wild Mining. Instead of the reels remaining static for the player, this row will be destroyed and replaced with wild symbols for the player.

This is the mechanic that makes "no passive spins" possible - even on a non-winning layout, the grid can still be returned to motion.

Players browsing different slots with varying mathematical models may find it interesting to play Legacy of Dead on VivatBet.

Lucky Wagon Spins — three entry levels

The Lucky Wagon Spins bonus round features a cart that collects multiplier coins. There are three entry levels, and higher entries mean higher starting potential.

• 75× stake - entry level

• 150× stake - mid level

• 500× stake - top level

The maximum win for this bonus is 60,000× stake.

Another slot featuring numerous bonus rounds is Sweet Bonanza.

Fire in the Hole xBomb vs FitH 2 vs FitH 3 — what changed

Fire in the Hole xBomb laid the foundation: the expanding mine, xBomb Wild, and Wild Mining. FitH 2 and FitH 3 keep this core and add extra mechanics along with a higher ceiling, but the original remains the most straightforward entry point into the series, worth playing before trying a Fire in the Hole 2 demo.

Demo and responsible gambling

A demo of Fire in the Hole xBomb should be available at VivatBet — check current availability on the platform. Given the extreme volatility, treat the 60,000× ceiling as a theoretical outcome, not an expectation, and remember that a 500× Bonus Buy at the €50 max stake costs €25,000.

The same applies if you're looking for a Fire in the Hole 2 demo — check its availability separately, since the sequel plays differently.

VivatBet holds an Estonian gambling license, and the casino is for players 21 and older.