Nolimit City’s Fire in the Hole 4 Preview: A Max Win That Rose 5,000x Per Game Reaches 75,000x
Nolimit City’s mining slot Fire in the Hole 4 arrives on November 17. The max win, which started at 60,000x in the first game, has risen by 5,000x with each sequel to reach 75,000x. Using official material, we preview the series history along with the 6×6 mine, xBomb and Lucky Nugget Spins.
Key takeaways
- The official release is November 17, with exclusive early access at some operators from November 10.
- RTP 96.01%, max win 75,000x, hit frequency 22.18%, and the bonus triggers on average once every 205 spins.
- The 6×6 board starts with 3 rows and opens one more row with each collapse, up to 6.
- The Lucky Nugget Spins bonus starts with 3 spins and resets to 3 whenever a Nugget lands, with Upgrade Reel multipliers of up to 100x.
Nolimit City‘s Fire in the Hole is a series about a dwarf miner blasting through tunnels for gold. According to the official description, the dwarf in part 4 is broke again. After escaping the frozen wastelands with an ice bear, he leaves his brother behind and follows rumours of ‘Golden Balls’ into the jungle, and his younger brother sets out to find him.
Parts 1 to 4: the series in numbers
Line the games up and one pattern stands out: the max win has gone up by exactly 5,000x with each release.
| Games | Release | RTP | Max win |
|---|---|---|---|
| Fire in the Hole | 2021.03 | 96.06% | 60,000x |
| Fire in the Hole 2 | 2024.02 | 96.07% | 65,000x |
| Fire in the Hole 3 | 2025.06 | 96.05% | 70,000x |
| Fire in the Hole 4 | 2026.11.17 (coming soon) | 96.01% | 75,000x |
RTP has stayed just above 96% across all four games. The 75,000x max win in part 4 is called the ‘MOTHERLOAD’, and according to official figures the odds of reaching it are 1 in 40 million. Once it is reached, the round ends on the spot.
A 6×6 mine that widens as it collapses
The board is 6 reels by 6 rows, but it is not fully open from the start. Every spin begins with only 3 active rows, and each time symbols collapse through a win or an explosion, another row opens, up to 6. Nolimit City calls this the ‘Collapsing Waterfall’. The longer the chain, the bigger the board and the more ways to win.
There are three ways to start a new collapse: a regular win, an xBomb Wild explosion and ‘Wild Mining’. Wild Mining triggers in the base game when 3 to 6 identical symbols line up horizontally or vertically without a win. Those symbols are removed and create wilds, from 1 wild for 3 symbols up to 4 wilds for 6.
xBomb, xWays and xSplit
Nolimit City’s signature ‘x’ features all show up. When an xBomb Wild explodes, it clears the symbols in its row and column and raises the win multiplier for the next collapse by 1. Afterwards it turns into another xBomb, an xWays symbol that grows to size 2 to 4, an Infectious xWays that also enlarges matching symbols, or a regular symbol. xSplit splits the symbols in its row and column in two, adding more ways to win.
Dirt adds another variable. Dirt blocks can hide xBomb, xSplit or Bonus symbols, which only appear once the dirt is cleared or hit by an xBomb or xSplit.
Lucky Nugget Spins: a bonus that runs on 3 lives
Three or more Bonus symbols open ‘Lucky Nugget Spins’. The 4-row board gets Collector Chests below and an Upgrade Reel on the right. Spins start at 3 and reset to 3 whenever a Nugget lands. Nuggets and Dwarfs move down one position per spin and are collected in the chests at the bottom.
The Upgrade Reel holds x2, x3, x5, x10, x25 and x100 multipliers that apply to every Nugget and Dwarf value in the same row. Each position has 1 to 4 locks, though, which must be removed one at a time by Bonus symbols or Dynamite. The enhancers in the top row vary too. Dynamite doubles Nugget and Dwarf values, the Dwarf collects all values on the board, and Freeze Cell locks Nuggets in place. The Evil Dwarf, on the other hand, removes a Nugget but randomly multiplies Collector Chest values by x1 to x5.
Bonus buys and boosters
There are four bonus buys: Guaranteed Dwarf and Nuggets at 1,500x, Guaranteed Dwarf at 800x, Guaranteed Evil Dwarf at 650x, and Random Dwarf at 1,000x, which brings either a Dwarf or an Evil Dwarf on every spin. Base game boosters are also available: a Bonus Booster guaranteeing 1 Bonus symbol for 2x, a Dirt Bonus Booster guaranteeing 3 Bonus symbols in dirt for 5x, a Reels Booster opening all 6 rows from the start for 8x, and an xBomb Booster guaranteeing 6 xBombs on reels 5 and 6 for 15x. Bets range from €0.20 to €100.
Demo on release day, parts 1 to 3 for now
Nolimit City demos open on release day, so Fire in the Hole 4 will be added to AI Slot after November 17. Until then, parts 1 to 3 are a good way to learn the xBomb and mine mechanics. Part 3, the most recent, is the closest to part 4.
You can also play Fire in the Hole part 1 and part 2, and every Nolimit game is collected in Nolimit City free slots.
Sources: Nolimit City official game page, AI Slot game data