- 5 win lines and stakes from 20p to £2
- The Coin Inferno Collector steps down the reels, collecting Cash Coin values as it moves
- The Win & Spin Bonus adds three locked rows above the reels, with a Grand jackpot worth up to 250x the stake
Coin Inferno Step ‘n’ Stack is a fire-themed slot from Inspired Entertainment in the B3 category, with 3 reels, 5 win lines and stakes of 20p to £2. A stepping Collector symbol, a coin pile and an expanding Win & Spin Bonus drive its features.
The Collector appears throughout. In the base game it collects Cash Coin values as it moves down the reels, it forms part of the bonus trigger, and in the Win & Spin Bonus it collects the Cash Coins that land on its row.
Base Game and Symbols
Triple Crown is the Wild. It can appear on any reel during the base game and substitutes for all symbols except Cash and Collector symbols.
Coin Inferno is the Collector. When it lands during the base game, it collects all visible Cash Coin values from that spin. It then moves down one position on subsequent spins within the same game cycle, until it reaches the bottom or the bonus is triggered.
Cash symbols can award prizes of up to 15x the current stake. Pot symbols can award the Mini, Minor or Major jackpot prizes, with the highest pot value reaching up to 100x the current stake.
Every Coin symbol that lands is added to the coin pile, and each addition has a chance to make the pile grow or to award the Win & Spin Bonus.

Win & Spin Bonus
Landing Cash Coin symbols on reels 1 and 3 along with a Collector symbol on reel 2 triggers the Win & Spin Bonus. The reel set expands with three additional rows above the existing reels, and these new rows begin locked. Each locked row needs a specified number of Coin symbols to land before it unlocks.
Collector symbols that land stay in place for the rest of the feature, even on a locked row. When a Cash Coin lands on an unlocked row, its value is collected by all Collector symbols on that row and the Cash Coin is then removed. Collectors do not collect values from other Collectors.
The bonus begins with 3 lives, and the count falls by 1 after each spin. A Cash Coin or Collector landing on an unlocked row resets it to 3, and the bonus ends when lives reach 0. Cash Coins can award prizes of up to 15x the current stake, and Pot symbols can award the Mini, Minor, Major or Grand jackpot, with the Grand worth up to 250x the current stake.
Fortune Spins
Fortune Spins are an alternative to the base game, activated with a dedicated button. During the feature, all standard reel symbols are removed, leaving only Cash Coin and Collector Coin symbols in play.
Dual Wheel Gamble
Two wheels are available. The left wheel offers a chance to boost winnings by 1.5x, 2x, 3x, 5x or 10x. The right wheel offers a chance to enter the Win & Spin Bonus, the Super Win & Spin Bonus or the Mega Win & Spin Bonus, depending on the value of the winnings being gambled.
Selecting either wheel spins the pointer. If it lands on the green segment, the cash value or bonus is awarded, and if it lands on the red segment, the winnings are lost and play returns to the base game.
Overall
Coin symbols build the coin pile in the base game and unlock the extra rows in the bonus. Collectors that land in the bonus stay in place and gather the Cash Coins on their row once it opens, and the gamble’s right wheel can lead to the Super and Mega versions of the Win & Spin Bonus.



