Fossil Fury

243 to 16,807 ways · the multiplier doubles on every win to x2048 · a wild after every win · 5 or 15 free spins on a growing board · 9,493x max win

RTP
97%
Volatility
High
Max win
9,493x
Multiplier
to x2048
Ways
243 to 16,807

A five reel ways slot on Fossil Island, where the wyverns nest under the volcano. Three or more of a kind on adjacent reels from the left pays, on every way. Every win clears away, leaves a wild where one of the winners was, and lets new symbols fall in, and every win doubles the multiplier for the next one, all the way to x2048. Fossil footprints open the free spins, where the board grows taller and the multiplier is never reset.

How to play Fossil Fury

  1. Set your bet and spin. Five reels of three rows pay 243 ways: three, four or five of a kind on adjacent reels from the leftmost pays, for every way it can be made.
  2. The four wyverns are the high symbols, the ancient wyvern the best of them. Pyrophosphite, calcite, numulite and volcanic ash are the low ones. The wyvern visage is wild and stands in for every paying symbol.
  3. Every win is an avalanche: the winning symbols break away, one wild is left on a spot they cleared, and the rest fall with new symbols dropping in from above. It carries on while something pays.
  4. Each avalanche pays at the multiplier showing, then the multiplier doubles: x1, x2, x4 and on up to x2048. In the base game it goes back to x1 on the next spin.
  5. Three, four or five fossil footprints pay 2x, 3x or 5x the bet and open 5 free spins on the 5x3 board, 15 on a 5x5 board (3,125 ways) or 15 on a 5x7 board (16,807 ways). In the free spins the multiplier is never reset.
  6. During the free spins three or more footprints pay again and add two rows to the board, up to seven, and five of them add a spin. Buy Free Spins opens the three versions directly for 80x, 240x or 880x your bet. A round is capped at 9,493x your bet.

About Fossil Fury

Fossil Fury is a rebuild of a slot whose whole idea is a multiplier that only goes up. Every avalanche doubles it, and the wild left behind after each win keeps the chain going, so one good drop can climb through x8, x16 and x32 in a single spin. We set it on Fossil Island, Old School RuneScape's volcanic island, with its wyverns and its fossils for the symbols.

The free spins are where it gets big. The multiplier carries from spin to spin and never resets, and every set of footprints adds two rows to the board, from 243 ways to 3,125 and then to 16,807. A tall board with the multiplier already in the hundreds is how a round reaches the cap.

This is a high volatility slot, as the original is. Most spins pay nothing, most features pay a few times the bet, and a few climb into the thousands. The 9,493x cap ends a round the moment it is reached.

The music is Old School's own from Fossil Island: Preserved under the base game and Fossilised under the free spins. Everything a spin does is decided from the provably fair seed before a symbol moves: every drop, every wild, every footprint and the whole chain of avalanches, which is computed on the server and replayed on screen.

Fossil Fury FAQ

What is Fossil Fury?

An Old School RuneScape themed ways slot set on Fossil Island. Five reels, 243 ways in the base game, avalanches that leave a wild behind, and a multiplier that doubles on every win up to x2048.

How does the multiplier work?

Every winning avalanche pays at the multiplier showing and then doubles it: x1, x2, x4, x8 and so on up to x2048. In the base game it goes back to x1 on the next spin. In the free spins it is never reset.

How do the free spins work?

Three, four or five fossil footprints open 5 free spins on 5x3, 15 on a 5x5 board or 15 on a 5x7 board. In the free spins three or more footprints pay, add two rows to the board up to seven, and five of them add a spin.

What does Buy Free Spins do?

It opens the free spins directly: 80x your bet for 5 spins on 5x3, 240x for 15 spins on 5x5 and 880x for 15 spins on 5x7.

What is the RTP of Fossil Fury?

97%. The most a round can pay is 9,493x your bet.

How volatile is Fossil Fury?

High. Wins are rare in the base game and most of the return comes from the multiplier climbing, so long quiet runs are normal.

Why Fossil Island?

Fossil Island is Old School RuneScape's volcanic island, home to the fossil wyverns and the museum camp. The wyverns are the high symbols, the fossils and the volcanic ash the low ones, and the music is the island's own.

Is it provably fair?

Every round is generated from a server seed that is hashed and shown to you before you bet, combined with a client seed you control and an incrementing nonce. When you rotate your seed the old server seed is revealed, so you can replay every round it produced and confirm nothing changed after the fact.

FireBet is not affiliated with Jagex Ltd.

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