Big Bass Boom delivers intense high-volatility gameplay where patient anglers can reel in massive wins. The slot pays out less frequently than low-volatility games, but when those bass bite, the rewards can reach 5,000 times your total bet through progressive free spins multipliers.
Land three scatter symbols showing the bass leaping from water to trigger the free spins feature. Receive 10, 15, or 20 spins for landing 3, 4, or 5 scatters respectively across any reel positions.
10-20 Free SpinsEvery fish symbol displays a random cash value ranging from 2x to a whopping 5000x your total bet. During free spins, the fisherman wild symbols collect all visible money values on screen when they land.
Up to 5000x per fishCollect fisherman wild symbols during free spins to unlock escalating multipliers. Every fourth wild collected retriggres 10 additional spins and increases the money collection multiplier through four powerful levels.
1x → 2x → 3x → 10xAll values shown are maximum payouts for five matching symbols on a payline at £250 bet. Bass fish symbols also display random money values collected by wild fisherman symbols during free spins.
Certified Theoretical RTP
Big Bass Boom returns an average of 97.97% of all wagered money to players over the long term. This above-average RTP combined with high volatility means extended dry spells can be followed by substantial winning sessions when the free spins feature delivers its full potential.
Land three or more scatter symbols anywhere on the reels in a single spin. The scatter shows a bass fish leaping from water with a red banner reading "SCATTER" below. Three scatters award 10 free spins, four scatters give 15 spins, and five scatters trigger 20 free spins. When only two scatters land, the game may randomly activate a respin or hook feature to pull in the third scatter.
The bass fish symbols display random cash values on every spin: 2x, 5x, 10x, 15x, 20x, 25x, 50x, 100x, 200x, 500x, 1666x, 2500x, or 5000x your total bet. These values are only collected during free spins when a fisherman wild symbol lands on the same screen. The wild collects all money values visible, multiplied by your current level multiplier (1x, 2x, 3x, or 10x).
Yes, through the wild collection mechanic. Every fourth wild fisherman symbol you collect during free spins awards an additional 10 free spins and increases your multiplier level. This can happen three times total: at the 4th wild (level 2, 2x multiplier), 8th wild (level 3, 3x multiplier), and 12th wild (level 4, 10x multiplier). After reaching level 4, no further retriggers are possible in that bonus round.
The maximum win is capped at 5,000 times your total bet. If your free spins round reaches this cap before all spins are complete, the round immediately ends, you receive the 5,000x win, and any remaining free spins are forfeited. At the maximum bet of £250, this equals a £1,250,000 potential win, though most players will wager smaller amounts.
These are random helper features during free spins. The dynamite spin randomly adds money fish symbols when fisherman wilds are present but no fish landed. The hook feature pulls a reel up to reveal fisherman wilds when fish symbols appeared but no wilds landed. The bazooka changes all non-fisherman symbols to new symbols when only wilds are visible. These increase your chances of collecting money values.
Big Bass Boom is a high-volatility slot designed for entertainment. Only wager amounts you can afford to lose. Set deposit limits, time limits, and loss limits before playing. If you feel your gambling is becoming problematic, seek help from GamCare, BeGambleAware, or contact the National Gambling Helpline. Never chase losses or gamble under the influence of alcohol or when emotionally distressed.
