Fire in the Hole xBomb
Fire in the Hole xBomb takes players underground with a grizzled dwarf miner searching for gold. Released by Nolimit City in March 2021, it was the first game to feature the studio’s xBomb mechanic: an exploding wild that clears space on the grid and raises the win multiplier with every blast. The game is rated Extreme volatility and caps wins at 60,000x the bet.
The reels grow as you play. Each spin starts with three active rows on six reels, and every collapse unlocks another row, up to a full 6×6 grid with 46,656 ways. This review walks through the Collapsing Mine, xBomb Wilds, Wild Mining and the Lucky Wagon Spins bonus, using the official figures from Nolimit City’s game page.
Where to Play Fire in the Hole xBomb
Fire in the Hole xBomb can be found at casinos that offer Nolimit City games. The casinos below list Nolimit City among their providers, accept Australian players and are reviewed on BetsAuthority. Check the RTP in the game info before you play.
Quick Facts About Fire in the Hole xBomb
| Parameter | Details |
|---|---|
| Slot | Fire in the Hole xBomb |
| Provider | Nolimit City |
| Release | 2 March 2021 |
| Layout | 6 reels, 3 rows expanding to 6 rows |
| Ways to win | Up to 46,656 |
| RTP | 96.06% (provider figure; lower versions may exist) |
| Volatility | Extreme (Nolimit City rating) |
| Hit frequency | 25.98% |
| Bet range | 0.20 to 50 per spin (casino limits may differ) |
| Maximum win | 60,000x the bet (about 1 in 2.4 million) |
| Bonus frequency | About 1 in 200 spins |
| Bonus buy | Yes, where allowed |
How Fire in the Hole xBomb Works
Wins are paid for matching symbols on adjacent reels from left to right. The grid has six reels and up to six rows, but only three rows are active when a spin begins; the rest are blocked off. Nolimit City lists a hit frequency of 25.98%, so roughly one spin in four produces a win.

The Collapsing Mine
The Collapsing Mine is the engine of the game. A collapse can be triggered by a winning combination, an xBomb explosion or the Wild Mining feature. Winning symbols are paid and removed, the remaining symbols fall down and new ones drop into the empty positions. With every collapse an additional row becomes active, so the reel area grows from three to four, five and finally six rows within a single paid spin. More rows mean more ways, which is why a chain of collapses can build quickly.
xBomb Wild Multiplier
The xBomb Wild substitutes for every symbol except bonus symbols. When it explodes it removes all adjacent symbols, again except bonus symbols, and increases the win multiplier by 1 for the next collapse. According to Nolimit City’s rules:

- All xBomb Wilds explode before the next collapse, unless the Wild Mining feature is triggered.
- An xBomb Wild explodes whenever there is a win, whether or not it is part of the winning combination.
- If there is no win and Wild Mining does not trigger, the xBomb still explodes and starts a new collapse.
Because each explosion both opens a row and adds to the multiplier, several xBombs in one sequence can turn a small win into a large one.
Wild Mining
Wild Mining gives non-winning spins a second chance in the main game. If 3, 4 or 5 of the same symbol line up horizontally and there is no winning combination, the game awards 1, 2 or 3 wilds respectively. All other positions above the bar then explode, as long as they are not bonus or wild symbols, and a new collapse begins.

Lucky Wagon Spins
Landing 3, 4 or 5 bonus symbols triggers Lucky Wagon Spins, with 2, 3 or 4 rows of the reel area open at the start. The feature begins with 3 spins, and the counter resets to 3 every time a coin lands in the reel area. All coin values are multiples of the active bet.

On each spin, the top row reveals enhancers: coin values, multipliers, dynamite, a bag, a chest or the dwarf. An enhancer is activated when a coin lands on the reel directly below it. This hold-and-respin style round is where most of the 60,000x potential sits, and results range from small payouts to very large ones depending on how many enhancers connect.
Bonus Buy
The Nolimit Bonus allows you to buy Lucky Wagon Spins directly where the casino and local rules permit. Review sites list three options based on 3, 4 or 5 bonus symbols at around 60x, 157x and 500x the bet. Prices can vary by casino and the feature is removed in some regulated markets, so check the buy menu in the game.
RTP Versions: Check Before You Play
The published RTP of 96.06% is the top configuration. Operators can select lower versions, and a setting of around 94.11% has been reported. The game looks identical in every version, so read the RTP in the game info at your casino to know which one you are playing.
Worked Example: A Collapse Sequence
Say you bet A$1 and land a small win on the three starting rows, with an xBomb Wild on the grid. The win is paid, the xBomb explodes, a fourth row opens and the multiplier rises to 2x for the next collapse. If the new symbols form another win and a second xBomb lands, the next collapse plays on five rows at 3x. A sequence that reaches six rows with a few xBombs can multiply a modest symbol win several times over, while a single win without xBombs ends quickly.
Bankroll Tips for Fire in the Hole xBomb
- Plan for at least 300 spins per session; the bonus lands about once every 200 spins on average.
- Most collapse sequences end after one or two steps, so do not raise your stake after a near miss.
- Decide in advance whether you will use bonus buys and how many.
- Set loss and time limits and use your casino’s deposit limit tools.
Pros and Cons of Fire in the Hole xBomb
| Pros | Cons |
|---|---|
| Expanding grid up to 46,656 ways | Extreme volatility |
| xBomb Wilds raise the multiplier on every blast | Many spins end without a collapse |
| Wild Mining helps non-winning spins | Lucky Wagon results vary widely |
| 60,000x maximum win | Bonus buy not offered in all markets |
| Clear, easy-to-follow theme | Lower RTP versions exist |
Demo Play vs Real Money
Nolimit City offers a free demo on its own site with the same maths as the real game. At the time of writing, the official demo did not load from an Australian connection. If a demo is available to you, use it to watch how the grid grows and how often Lucky Wagon Spins trigger before staking real money.
For real-money play, choose a casino with clear RTP information, reliable withdrawals and responsible gambling tools. Compare options in our casino reviews.
Frequently Asked Questions
Nolimit City lists the RTP at 96.06%. Lower versions of the game exist, so check the game info at your casino.
The maximum win is 60,000x the bet. Nolimit City estimates the chance at about 1 in 2.4 million spins.
The xBomb Wild substitutes for all symbols except bonus symbols. When it explodes it removes adjacent symbols and adds 1 to the win multiplier for the next collapse.
Land 3, 4 or 5 bonus symbols to start Lucky Wagon Spins with 2, 3 or 4 rows open. The round starts with 3 spins and resets to 3 whenever a coin lands.
The game starts with three active rows on six reels and opens a row with every collapse. With all six rows active there are 46,656 ways to win.
Responsible Gaming Note
Fire in the Hole xBomb is entertainment, not a way to earn money. Only play if you are 18 or older, set a budget and time limit before you start and stop when you reach them. Free and confidential support is available 24/7 from Gambling Help Online on 1800 858 858.
Final Verdict
Fire in the Hole xBomb is one of Nolimit City’s most approachable high-variance games. The Collapsing Mine and xBomb Wilds are easy to follow, the grid growth is satisfying, and Lucky Wagon Spins add a different style of bonus with a 60,000x ceiling. It is still an Extreme volatility slot, so long dry runs are part of the experience. Check the RTP at your casino, keep stakes modest and set limits before you play.