The bet sizes available in Wins of Nautilus Megaways range from 20p to £20.
Betting in this game uses the Megaways mechanic, which features up to 117,649 paylines.
Winning symbols are taken off the reels, leaving empty spaces which are filled by symbols falling in an 'avalanche'.
Avalanches are activated every time a new winning combination is formed.
The horizontal reel at the very top can be filled with new symbols appearing from the right-hand side.
Countdown Bomb Symbols
These symbols may only appear on the very top reel and reels two to five.
Countdown Bomb symbols feature a counter, which can range in value between one and four.
Every time an avalanche results in a winning combination, the value of the counter will decrease by one.
The Countdown Bomb symbol will turn into a Wild symbol when the counter reaches zero.
The new Wild symbol will cover the entire reel.
The Wild symbol will feature a multiplier worth 2x the starting value of the counter.
If a Countdown Bomb symbol is in the top reel, then it won't be able to explode.
A reel can contain more than one Countdown Bomb symbol.
If a Countdown Bomb symbol detonates while another Countdown Bomb symbol is on the reel, then the new Wild multiplier will be calculated by adding together the starting values of both counters once they have been doubled.
You need one Torpedo Shark symbol to appear for the Re-spin feature to activate.
Between two and ten random symbols will be chosen to be taken off the reels, causing an avalanche.
Deep Sea Bonus
The Deep Sea Bonus activates when three or more Bonus symbols are added to the meter during one avalanche.
Activating the bonus with three Bonus symbols will award 12 free spins.
An extra five free spins are added for each additional Bonus symbol used to activate the bonus.
The bonus features an unlimited progressive win multiplier - this will increase incrementally every time an avalanche results in a win.
It is possible to win 12 extra free spins if another three Bonus symbols appear during a free spin.
Return to Player
Return to Player (RTP): 96.10%
The expected return is the amount we pay out to players relative to the amount of wagering on the game.
For example, if we take £100 of wagers we will, on average, pay out £96.10 of wins.